Railway-RRB Group D 2018 Previous Year Question Paper and Answer Key Free PDF Download English -Sep 18, 2018

RRB Group D 2018 Prev. Yr. Paper (18 Sept
2018)
Total Time: 1 Hour : 30 Minute

1. (136 ÷ 17) + (17 × 13) – (103 – 85) × (62 + 145) ÷ 23 = ?
a. 75
b. 67
c. 59
d. 76
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2. An electric lamp of 120 W is used for 8 hours per day. Calculate the units of
energy consumed by the lamp in one day.
a. 16.00 unit
b. 1.50 unit
c. 0.96 unit
d. 2.00 unit
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3. When was the Battle of Waterloo fought ?
a. 1835
b. 1815
c. 1850
d. 1840
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4. Which of the following does NOT belong to this group? (+1, -0.33)
1. Cotton
2. Wool
3. Rayon
4. Cardboard
a. D
b. B
c. C
d. A
5. Two resistors, one of 10 Ω and the other of 20 Ω. are connected in series to
a 6 V battery. The current in the circuit will be?
a. 0.3 A
b. 0.2 A
c. 0.9 A
d. 0.6 A
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6. If ‘+’ becomes ‘÷’ and ‘×’ becomes ‘+’ then what will be the value of {(36 +
6) + 6} × 12?
a. 12
b. 6
c. 13
d. 21
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7. In what time can Saloni cover a distance of 450 m, if she runs at a speed of
20 Km/hr.?
a. 81 sec
b. 320 sec
c. 3 minutes
d. 102 sec
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8. A merchant incurred a loss of 5% by selling a book for Rs. 25.65. If he sells it
for Rs. 31.05 , find his gain percent or loss percent.
a. Gain 15%
b. Loss 15%
c. Gain 10%
d. Loss 10%
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9. Consider the following statement and assumptions and decide which of
the assumptions is implicit from the given statement.
Statement:
The school management has introduced compulsory swimming sessions
for children below Class V.
Assumptions:
1. Younger children learn swimming faster.
2. The school wishes to enhance the overall development of children.
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a. Both assumptions I and II are implicit
b. Neither assumption I nor II is implicit
c. Only assumption II is implicit
d. Only assumption I is implicit
10. Which of the following events is celebrated every year on January 9 to
mark the contribution of the overseas Indian community in the
development of India?
a. Unnatiya Bharat Divas (UBD)
b. Overseas Indian Development Day (OIDD)
c. Akhil Bharatiya Divas (ABD)
d. Pravasi Bharatiya Divas (PBD)
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11. When the following decimals are arranged in ascending order then what
decimal number should be in the middle?
5.74, 6.03, 0.8, 0.658 and 7.2
a. 6.03
b. 5.74
c. 7.2
d. 0.8
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12. If in a coded language, COCK is written as DPDL, then how will HEN be
written in that language?
a. HEO
b. IDP
c. ICO
d. IFO
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13. Read the given statement(s) and conclusions carefully and select which
of the conclusions logically follow(s) from the statement(s).
Statements:
I. Some pins are metals.
II. Some clips are metals.
Conclusions:
I. Some metals are pins.
II. Some pins are clips.
a. Both conclusions follow
b. Only conclusion 2 follows
c. Only conclusion 1 follows
d. Neither conclusion follows
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14. How many rectangles are there in the following picture? (+1, -0.33)
a. 20
b. 21
c. 22
d. 24
15. Find the value of {(.98)
3+ (0.02)
3+ 3 × 0.98 × 0.02 – 1}
a. 1.98
b. 1.09
c. 1.562
d. 0
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16. The 2018 best tableau award in the republic day parade was given away
by Union Defence Minister Nirmala Sitharaman to the state of:
a. Karnataka
b. Goa
c. Maharashtra
d. Gujarat
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17. Which one of the following is NOT a simple permanent tissue?
a. Sclerenchyma
b. Parenchyma
c. Xylem
d. Collenchyma
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18. sin
260° + cos
230° + cot
245° + sec
260° = ?
a. 15/2
b. 13/2
c. 7/2
d. 5/2
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19. Read the given question and decide which of the following equations
is/are sufficient to answer the question.
Question:
What is the value of x?
Equations:
1. x
2– 18x + 81 = 0
2. p + q + r = 0
a. Only 1 is sufficient
b. Either 1 or 2 is sufficient
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c. Neither 1 nor 2 is sufficient
d. Only 2 is sufficient
20. The pH of the solution is given. Which of the solutions has the highest
concentration of hydrogen ions?
a. 10.1
b. 4.7
c. 2.4
d. 8.0
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21. A train crossed a 110 m long platform in 13.5 seconds and a 205 m long
platform in 18.25 seconds. What was the speed of the train?
a. 72 km/h
b. 66 km/h
c. 69 km/h
d. 75 km/h
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22. A cistern can be filled by two pipes A and B in 4 hours. When full, the tank
can be emptied by a third pipe C in 8 hours. If all taps are turned on at
the same time, the cistern will be full in?
a. 4 hours
b. 8 hours
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c. 16 hours
d. 8/3 hours
23. Aadhya walks 500 m towards North and then turns left and walks 250 m,
In which direction is she with respect to her initial position?
a. South-East
b. North-West
c. North-East
d. South-West
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24. In which of the following plants is the plant body NOT differentiated into
roots, stem, and leaves?
a. Riccia
b. Chara
c. Marsilea
d. Spirogyra
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25. Consider the given statement and decide which of the following
assumptions is/are implicit in the statement.
Statement:
“The final exams are getting near”, Rina reminded her daughters.
Assumptions:
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She wants them to remember about their study schedule.
She wants them to give serious thought to their exams.
a. Both I and II are implicit.
b. Only II is implicit.
c. Neither I nor II is implicit.
d. Only I is implicit.
26. The Central Government’s initiative aimed at bringing masses within the
formal banking system is called:
a. Jan Bank Yojana
b. Jan Dhan Yojana
c. Jan Aadmi Yojana
d. Jan Rupaya Yojana
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27. In March 2018, who released Rs. 1,000 and 10 commemorative coins on the
occasion of the Nabakalebara festival at a function held in Puri, Odisha?
a. The Governor of Odisha
b. The Chief Minister of Odisha
c. The Prime Minister of India
d. The President of India
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28. 4 + 4.44 + 44.4 + 4.04 + 444 – 20 = ?
a. 480.88
b. 472.88
c. 495.22
d. 577.2
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29. In which group of the modern periodic table are halogens placed?
a. 16
th
b. 18
th
c. 1
st
d. 17
th
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30. Senior IAS officer S Selvakumar has been appointed as the new chairman
and managing director of _________ with effect from January 16, 2018.
a. The Development and Educational Communication Unit (DECU)
b. Security Printing and Minting Corporation of India Limited (SPMCIL)
c. The SHAR Centre
d. The Vikram Sarabhai Space Centre (VSSC)
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31. A car covers a distance of 44 km using litres of petrol. What distance
can the car cover using 1 litre of petrol?
2 (+1, -0.33)
4
3
a. 19 km
b. 16 km
c. 13 km
d. 15 km
32. Find the odd one out.
a. D
b. A
c. B
d. C
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33. Which of the following hormones brings about changes in appearance
seen in boys at the time of puberty?
a. Thyroxin
b. Testosterone
c. Animal hormone
d. Insulin
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34. Which of the following states emerged as overall champions of the first
(inaugural) edition of Khelo India School Games (KISG) held from 31
st
January to 8
th February 2018 at Indira Gandhi Indoor Stadium?
a. Haryana
b. Gujarat
c. Maharashtra
d. Uttar Pradesh
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35. From which Indian princely state did Velu Thampi Dalava hail? He is
known for revolting against the British.
a. Chola Kingdom
b. Mysore Kingdom
c. Vijayanagaram
d. Travancore
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36. Select the option that is related to the third word in the same way as the
second word is related to the first word.
Glass : Transparent ∷ Wood : ?
a. Furniture
b. paint
c. Block
d. Opaque
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37. If two unequal masses possess the same kinetic energy, then the heavier
mass has:
a. equal momentum
b. lesser momentum
c. greater momentum
d. Can't say
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38. If 15 boys earn Rs. 750 in 5 days, then how much money 25 boys will earn
in 6 days?
a. Rs. 960
b. Rs. 1500
c. Rs. 1200
d. Rs. 900
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39. Which of the following compounds does NOT possess water of
crystallization?
a. Gypsum
b. Washing soda
c. Copper sulphate
d. Baking soda
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40. The velocity of a vertically thrown ball, with time, will be:
a. Downwards positive
b. Upwards negative
c. Upwards positive
d. None of the above
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41. Given is a statement followed by two assumptions numbered I and II.
Consider the statement and the following assumptions and decide which
of the assumptions is/are implicit in the statement.
Statement:
Sustainability can be defined as the practice of meeting the needs of the
current generation without degrading or destroying the natural resources
(e.g. water, soil, biodiversity, oil, minerals.)
Assumptions:
1. Our lives and economies are dependent on natural capital, which is
made up of these natural resources and natural services, and the
energy provided by the sun.
2. Just as every investor knows, we should invest our capital and live off
on the interest, it provides. To live sustainably, we need to do the
same: protect our natural capital and live off our biological income.
a. Only assumption II is implicit.
b. Neither assumption I nor II is implicit.
c. Only assumption I is implicit.
d. Both assumptions I and II are implicit.
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42. Which of the following Venn diagrams correctly represents the
relationship between the given classes?
1. Table
2. cloth
3. Wood
a.
b.
c.
d.
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43. If South becomes South-East, then what will North become?
a. South - West
b. North - East
c. South - East
d. North - West
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44. Lata makes 20 kg paneer at home and sells it every morning. From one
litre of milk, she makes 200 gms of paneer. The cost of a litre of milk is Rs.
40. How much money does she spend in procuring milk every day?
a. Rs. 3,000
b. Rs. 4,000
c. Rs. 2,000
d. Rs. 2,500
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45. If α and β are roots of the equation x
2– x – 1 = 0, then the equation whose
roots are α/β and β/α is:
a. x
2+ 3x – 1 = 0
b. x
2+ x – 1 = 0
c. x
2– x + 1 = 0
d. x
2+ 3x + 1 = 0
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46. If a + b + c = 2s, then [(s – a)
2+ (s – b)
2+ (s – c)
2+ s
2
] = ?
a. (s
2– a
2– b
2– c
2
)
b. (s
2+ a
2+ b
2+ c
2
)
c. (a
2+ b
2+ c
2
)
d. (4s
2– a
2– b
2– c
2
)
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47. Find the odd one out.
a. B
b. C
c. D
d. A
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48. Consider the following statements to be true even if they seem to be at
variance from commonly known facts and decide which of the
conclusions logically follows from the statements.
Statements:
1. No glass is a paddle.
2. All paddles are brakes.
Conclusions:
1. All brakes are paddles.
2. Some brakes are paddles.
3. No brake is glass.
a. Only conclusion 3 follows
b. Only conclusion 2 follows
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c. All the three conclusions follow
d. Only conclusion 1 follows
49. Which one of the following animals reproduce by budding and can also
carry out regeneration?
a. Hydra
b. Plasmodium
c. Planaria
d. Yeast
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50. If North-East becomes North, then what will East become?
a. South-East
b. North-East
c. North-West
d. South-West
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51. Karewas, a type of soil/deposit, is found in which Indian state?
a. Jammu and Kashmir
b. West Bengal
c. Rajasthan
d. Nagaland
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52. Choose the missing digit ‘x’ from the options given for the number
987x54, so that the number is completely divisible by 6.
a. 5
b. 3
c. 2
d. 1
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53. Electric bulbs are usually filled with chemically-inactive gases like
________.
a. hydrogen
b. oxygen
c. nitrogen
d. chlorine
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54. If the length and breadth of a rectangle are increased by 8% and 12%
respectively, then by what percent does the area of that rectangle
increase?
a. 22%
b. 24%
c. 20%
d. 20.96%
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55. Who classified elements based on atomic numbers?
a. Newlands
b. Mendeleev
c. Dobereiner
d. Moseley
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56. Who has been crowned Femina Miss India 2018?
a. Anukreethy Vas
b. Shreya Rao Kamavarapu
c. Sunaina Kamath
d. Meenakshi Chaudhary
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57. A chemical reaction in which heat is generated is called a/an
________.
a. endothermic reaction
b. exothermic reaction
c. combustion reaction
d. displacement reaction
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58. Which of the following sport is Yuzvendra Chahal related to? (+1, -0.33)
a. Tennis
b. Hockey
c. Shooting
d. Cricket
59. Who won the Filmfare Best Actor in a Leading Role (Male) award 2017?
a. Shahrukh Khan
b. Ranveer Singh
c. Aamir Khan
d. Ranbir Kapoor
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60. Which of the following does NOT belong to this group?
A. Nail
B. Hair
C. Acne
D. Toe
a. A
b. D
c. B
d. C
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61. Find the next number in the following series.
16, 18, 22, 24, 28, 30,?
a. 25
b. 30
c. 27
d. 34
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62. Consider the given statements to be true even if they seem to be at
variance with the commonly known facts and decide which of the given
conclusions logically follow(s) from the statements.
Statements:
I. All covers are plastic.
II. All plastic are toxic.
Conclusions:
1. All plastic are covers.
2. All toxic are covers.
a. All the conclusions follow.
b. Only conclusion 2 follows
c. Only conclusion 1 follows
d. No conclusions follow
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63. There are four numbers in a set. The mean of the three smallest numbers
is 9, whereas the mean of the three largest ones is 11. What is the range of
the data set?
a. 3
b. 6
c. 9
d. 5
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64. The point where the entire weight of an object acts is known as the
________.
a. center of friction
b. center of area
c. center of gravity
d. center of pressure
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65.
a. -7
b. 7
c. -9
d. -8
22 − [23 − {24 − (27 − 25 − 30)}] =? (+1, -0.33)
66. If ‘+’ means ‘÷’, ‘÷’ means ‘-’, ‘-’ means ‘×’ and ‘× ‘means ‘+’, then what is
the value of
80 + 20 ÷ 5 - 12 × 92
a. 28
b. 22
c. 36
d. 35
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67. The weight of an object on the moon is how many times its weight on the
earth?
a.
b.
c. 5 times
d. 6 times
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68. Find the number of squares in the following figure.
a. 22
b. 21
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times
5
1
times
6
1
c. 23
d. 20
69. Which of the following option figures are combined to form the question
figure?
Question figure
Option figure
a. C, D and A
b. A and D
c. B, C and D
d. C and D
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70. The correct formula of calcium hydroxide is:
a. CaOH 2
b. Ca 2OH
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c. Ca(OH) 2
d. CaOH
71. Name the book authored by K. R. Meera which raises pertinent questions
about the politics of faithfulness and the price of idealism.
a. Gilletin
b. Nethromeelanam
c. The Gospel of Yudas
d. Aarachar
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72. In a class, there were 9 boys and some girls. In a test, the mean score
obtained by the boys was 13 while that obtained by the girls was 15. If the
overall average was 14.28, what was the total number of students in the
class?
a. 24
b. 26
c. 27
d. 25
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73. Mamata is the mother of Surya. How is Mamata’s brother related to
Surya’s brother?
a. Grandfather
b. Father
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c. Brother
d. Maternal uncle
74. The name of the comprehensive mentorship programme tailored
exclusively for Indian startups that are using Machine Learning (ML) and
Artificial Intelligence (AI) to build solutions for the pressing problems in
the country is:
a. Launchpad Accelerator India
b. Modernization Accelerator India
c. Automation Accelerator India
d. MLAI Accelerator India
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75. A ray of light passes from water to glass. It bends ________.
a. Away from the normal and speeds up
b. Away from the normal and slows down
c. Towards the normal and slows down
d. Towards the normal and speeds up
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76. Which of the option figures bears the closest resemblance to the
question figure?
Question figure:
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Option figures:
a. B
b. A
c. D
d. C
77. A 40 kg girl runs up a flight of stairs having a rise of 5 m in 4 s. The power
developed by her will be ________.
(take g = 10 m/s
2
)
a. 100 W
b. 200 W
c. 500 W
d. 2000 W
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78. If Rs. 686 is divided, into four parts, in proportions then find
the first part is:
a. Rs. 52
b. Rs. 42
: (+1, -0.33)
2
1
:
3
2 3 : 4,
c. Rs. 56
d. Rs. 48
79. The Election Commission of India (ECI) celebrated 8
th National Voters
Day across the nation on ______ for enhanced participation of citizens
in the electoral process.
a. 28
th January
b. 25
th January
c. 24
th January
d. 26
th January
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80. Which is the longest river of Europe?
a. Danube
b. Volga
c. Ural
d. Rhine
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81. Find compound interest on Rs. 50000 at 12% per annum for 6 months,
compounded quarterly.
a. Rs. 3045
b. Rs. 2875
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c. Rs. 3125
d. Rs. 2965
82. The Ministry of Women and Child Development had launched a social
media campaign to mark ________ on 11 August 2016.
a. Women’s Day
b. Daughter’s Day
c. Son’s Day
d. Men’s Day
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83. The induced current is highest when the direction of motion of the coil is
at ________ with respect to the magnetic field.
a. 0°
b. 45°
c. 180°
d. 90°
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84. Directions: Study the following graph carefully and answer the question
that follows.
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Area cultivated in West Bengal is what percentage more than that
cultivated in Tamil Nadu?
a. 37.5%
b. 25%
c. 50%
d. 30%
85. Directions: The given pie chart shows information about the mobile
phone manufacturing companies in India. The total number of mobile
phone units manufactured is 12,40,000.
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How many units of mobile phones are manufactured by company
‘DEF’?
a. 1,24,000
b. 62,000
c. 31,000
d. 15,600
86. The breakdown of pyruvate using O 2
takes place in the _______.
a. lysosomes
b. nucleus
c. vacuoles
d. mitochondria
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87. Which of the following nations is the only country to win the ICC Under-19
Cricket World Cup four times?
a. New Zealand
b. South Africa
c. Australia
d. India
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88. Which of the following numbers will have an irrational square root? (+1, -0.33)
a. 11025
b. 6025
c. 9025
d. 3025
89. Who was awarded the 2017 Sahitya Academy award for his English novel
‘The Black Hill’?
a. Vikram Seth
b. Chetan Bhagat
c. Amitav Ghosh
d. Mamang Dai
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90. The digit in the unit’s place of the number represented by (7
95 – 3
58
) is:
a. 6
b. 7
c. 0
d. 4
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91. The lengths of one side of a rhombus and one of the two diagonals are 6
cm each. Find the area of the rhombus (in cm 2
).
a. 27√3
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b. 18
c. 9√3
d. 18√3
92. The ratio 75 : 125 in its simplest form is written as:
a. 3 : 5
b. 5 : 3
c. 2 : 3
d. 3 : 2
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93. Which of the following is malleable and ductile?
a. Phosphorus
b. Sulphur
c. Carbon
d. Copper
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94. Sound waves with frequencies below the audible range are called
________.
a. ultrasonic
b. infrasonic
c. supersonic
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d. None of these
95. Which among the following union ministers of India launched the mobile
app ‘Celebrating Yoga’ to connect people through Yoga for Scientific
healthy living?
a. Mahesh Sharma
b. Harsh Vardhan
c. Jagat Prakash Nadda
d. Smriti Irani
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96. A ball is dropped from a height of 80 m. The distance travelled by it in the
fourth second will be ________.
(take g = 10 m/s
2
)
a. 50 m
b. 15 m
c. 80 m
d. 35 m
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97. 5 – 8% of acetic acid is called:
a. glacial acetic acid
b. vinegar
c. ester
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d. ethanol
98. If P is 15 years old now and Q will be 26 years old after 6 years, what is the
ratio of their present ages?
a. 4 : 1
b. 3 : 4
c. 2 : 1
d. 2 : 3
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99. Given is a statement followed by two arguments numbered I and II.
Consider the statement and the following arguments and decide which
of the arguments is/are strong?
Statement :
Are 21st century teenagers under stress?
Arguments :
I. Yes, teenagers’ perception is that are expected to be successful or
good at everything. Failure has somehow gone from being viewed as a
learning opportunity to being clearly unacceptable.
II. No, stress is a relative perception that can be managed with proper
guidance.
a. Only argument II is strong.
b. Both arguments I and II are strong.
c. Only argument I is strong
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d. Neither argument I nor II is strong
100. Find the day name of 24 March 2006?
a. Monday
b. Friday
c. Wednesday
d. Sunday
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Answers
1. Answer: b
Explanation:
Using BODMAS we get,
⇒ (136 ÷ 17) + (17 × 13) – (103 – 85) × (62 + 145) ÷ 23,
⇒ 8 + 221 – 18 × 207 ÷ 23
⇒ 8 + 221 – 18 × 9
⇒ 8 + 221 – 162
⇒ 67
2. Answer: c
Explanation:
Given data
⇒ Rated value of the electric lamp (P) = 120 watts
⇒ Amount of time the lamp is being used = 8 hours/day
⇒ t = 8 h
We know that, Power(P) = E/t
Where ‘P’ is power in watts and ‘E’ is energy consumed in watt-hours and ‘t’ is time.
Substituting the values in the equation above,
120 = E/8
E = 960 Watt-Hours
E = 0.96 kWh or units. (1 Kilo Watt Hour = 1 unit)
Hence, the energy consumed by the lamp in 1 day (E) =0.96 units
3. Answer: b
Explanation:
The correct answer is 1815.
Key Points
The Battle of Waterloo, which took place in Belgium on June 18, 1815 , was
marked as the final defeat of Napoleon Bonaparte.
He conquered much of Europe in the early 19th century.
Napoleon rose through the ranks of the French army during the French
Revolution and seized control of the French government in 1799.
He became emperor in 1804.
The French Emperor Napoleon Bonaparte escaped from exile in March 1815 and
returned to power.
He decided to go on the offensive, hoping to win a quick victory that would tear
apart the coalition of European armies formed against him.
He expanded his empire across western and central Europe. The Battle of
Waterloo, in which Napoleon's forces were defeated by the British and Prussians,
marked the end of his reign and of France's domination in Europe.
The Battle of Waterloo, in which Napoleon’s forces were defeated by the British
and Prussians , marked the end of his reign and of France’sdomination in
Europe .
Important Points
The battle of Waterloo is still considered to be important due to the following reasons:
It paved a way for the UK to become a global power.
The Prussians’ contribution to the defeat of the French Army at Waterloo entered
the mythology of the Prussian state, creating a sense of nationalism
which then played a key role in the formation of the new German Empire after
1870
Historian John Sadler states that "Many who died that day in Waterloo were
buried in shallow graves but their bodies were later disinterred and their
skeletons were taken.
4. Answer: a
Explanation:
Cotton, wool and rayon are fibres but Cardboard is not a fibre.
Hence, “Cardboard” is the correct answer.
5. Answer: b
Explanation:
As the Resistors are connected in series the equivalent resistance will be -
R eqv = R 1+ R 2
= 10 Ω + 20 Ω
= 30 Ω
According to Ohm’s law -
→ V = IR
→ I = V/R
→ I = 6/30 = 1/5 [V = 6 V given]
→ I =0.2 A
6. Answer: c
Explanation:
Symbol + ×
Meaning ÷ +
Given expression: {(36 + 6) + 6} × 12
After changing the symbols:
{(36 ÷ 6) ÷ 6} + 12
= {6 ÷ 6} + 12
= 1 + 12 = 13
Hence, “13” is the correct answer.
7. Answer: a
Explanation:
⇒ Speed = 20 km/hr = 20 × (5/18) = 50/9 m/sec
⇒ Distance = 450 m
⇒ Time = distance/speed = 450/(50/9) = 81 sec
8. Answer: a
Explanation:
⇒ Loss% = {1 – (Selling price/Cost price)} × 100
⇒ 5 = {1 – (25.65/Cost price)} × 100
⇒ 5 = 100 – (2565/Cost price)
⇒ Cost price = 2565/95 = Rs. 27
Now,
⇒ Selling price = Rs. 31.05
⇒ Profit % = {(Selling price – Cost price)/Cost price} × 100
⇒ Profit % = {(31.05 – 27)/27} × 100 = 15%
9. Answer: c
Explanation:
The statement given us no information to support the fact that younger children
learn swimming faster. Hence assumption I is not implicit.
It is given in the statement school has made it compulsory for the children to learn
swimming, this implies that the school is serious about the overall development of
children. Hence, assumption II is also implicit.
10. Answer: d
Explanation:
Pravasi Bharatiya Divas is held traditionally on 9th January every year to
commemorate the return of Mahatma Gandhi as a Pravasi from South Africa to
India.
It also marks the contribution of the overseas Indian community in the
development of India.
The 15
th Pravasi Bharatiya Divas 2019 was celebrated with the theme " Role of
Indian Diaspora in building a New India .”
11. Answer: b
Explanation:
When the numbers are arranged in ascending order we get,
0.658, 0.8, 5.74, 6.03, 7.2
∴ The required decimal number is 5.74
12. Answer: d
Explanation:
Given,
Similarly,
Hence, “IFO” is the correct answer.
13. Answer: c
Explanation:
The minimum possible Venn diagram of the given statements,
Conclusions:
I. Some metals are pins → True
II. Some pins are clips → False (its possible but not definite)
Hence, only conclusion I follows.
14. Answer: d
Explanation:
We can count the rectangles as follows,
Hence, there are “24” rectangles in the given figure.
15. Answer: d
Explanation:
Given:
{(.98) 3 + (0.02) 3 + 3 × 0.98 × 0.02 – 1}
Concept used:
(a + b) 3 = a 3 + b 3 + 3ab(a + b)
Calculation:
{(.98)
3+ (0.02)
3+ 3 × 0.98 × 0.02 – 1
⇒ [(.98)
3+ (0.02)
3+ 3 × 0.98 × 0.02(0.98 + 0.02)} – 1]
Now, first term is of the form (a + b) 3 where a = .98 and b = 0.02
⇒ (0.98 + 0.02)
3– 1 = 1 – 1 = 0
∴ The value is 0.
16. Answer: c
Explanation:
Union Defence Minister of India Nirmala Sitharaman gave away Republic Day
Parade 2018 best tableau award toMaharashtra.
Tripura bagged the best state tableau in 2019 Republic Day parade With the
theme ‘Empowering Rural Economy the Gandhian Way’.
The second position was bagged by Jammu and Kashmir while the state of
Punjab was placed in the third spot.
India celebrated the 69
th republic day this year and Cyril Ramaphosa ,
President of South Africa was the chief guest for this year republic day parade.
17. Answer: c
Explanation:
Xylemand Phloem are Complex Permanent Tissue while the other three are
simple permanent tissues.
Xylem
Xylem is the tissue that carries water up through a plant. It is made
up of vessels or tracheids, xylem parenchyma, and xylem fiber.
Sclerenchyma
Sclerenchyma is the simple permanent tissue that makes a plant
hard and stiff.
Parenchyma
Parenchyma are thin-walled tissues which are involved in food
storage, photosynthesis, and other activities of plant life.
Collenchyma
Collenchyma cells are those which have irregularly thick cell walls
which provide support and structure.
18. Answer: b
Explanation:
Important trigonometric values
Calculation:
sin
260° + cos
230° + cot
245° + sec
260° = (√3/2)
2+ (√3/2)
2+ 1
2+ 2
2
⇒ (3/4) + (3/4) + 1 + 4
⇒ 13/2
∴ 13/2
19. Answer: a
Explanation:
Equation 1:
⇒ x
2– 18x + 81 = 0
⇒ (x – 9)
2= 0
⇒ x = 9, 9
∴ Equation 1 is sufficient
Also, equation in Statement 2 is not in variable x so it is not relevant
∴ Only Statement 1 is sufficient.
20. Answer: c
Explanation:
The pH level is a measure of the number of Hydrogen ions in a solution.
The lower the solution or compound on the pH scale, the higher will be the
concentration of hydrogen ions.
Therefore the solution having a pH of2.4will have the highest concentration of
hydrogen ions.
The pH scale ranges from 0 to 14.
A pH value of 7 is considered neutral, example - water and pH value > 7 is Basic
> pH value < 7 is Acidic
21. Answer: a
Explanation:
Let the length of train be x m.
⇒ Speed of train = (length of platform + length of train)/time
According to question,
⇒ (110 + x)/ 13.5 = (205 + x)/18.25
⇒ (110 + x)/2.7 = (205 + x)/3.65
⇒ 401.5 + 3.65x = 553.5 + 2.7x
⇒ 0.95x = 152
⇒ x = 160
⇒ Speed of train = (110 + 160)/13.5 = 20 m/sec = 20 × (18/5) = 72 km/hr
22. Answer: b
Explanation:
Pipe A and pipe B can fill the tank in 4 hours while pipe C can empty the tank in 8
hours.
Let the capacity of the tank be 8 units.
The units filled by pipe A and B in 1 hour = 8/4 = 2 units
The unit emptied by pipe C in 1 hour = 8/8 = 1 unit
∴ The unit filled by pipe A, B and C together in 1 hour = 2 – 1 = 1 unit
⇒ Time taken by pipe A, B and C together to fill 8 units = 8 hours
23. Answer: b
Explanation:
Hence, Aadhya is in North-West direction with respect to her initial position.
24. Answer: d
Explanation:
Spirogyrasare filamentous algae that consist of thin unbranched chains of
cylindrical cells while the other three are differentiated into roots, stems, and
leaves.
Spirogyras can form masses that float near the surface of streams and ponds.
Spirogyra is also known as water silk and pond silk.
Algae Spirogyra was the first living cell observed under a microscope by Anton
van Leeuwenhoek.
25. Answer: a
Explanation:
From the given statement, we understand the following things: the word ‘reminded’
tells us that Rina ‘wants them to remember about their study schedule’ and
because ‘the final exams are getting near’, she wants them to ‘give serious thought
to their exams’. From this we can safely state that both the assumptions are implied.
26. Answer: b
Explanation:
The Pradhan MantriJan Dhan Yojanawas launched on 28th August 2014 by
Prime Minister Narendra Modi.
It also entered into the Guinness Book of World Record for having most bank
accounts opened in one week.
The scheme sought to financially empower the poor by providing them access
to the formal banking system.
27. Answer: d
Explanation:
ThePresident of India Ram Nath Kovind released Rs 1,000 and Rs 10
commemorative coins on the occasion of Nabakalebar festival .
The government had announced the release of the coins marking the festival
which is a symbolic recreation of sibling deities -- Lord Jagannath, Balabhadra
and Devi Subhadra.
The commemorative coins were released at a function of Rashtriya Sanskrit
Sansthan at Puri in Odisha
28. Answer: a
Explanation:
⇒ 4 + 4.44 + 44.4 + 4.04 + 444 – 20 = 480.88
29. Answer: d
Explanation:
The correct answer is 17th.
The Halogens are the elements belonging to Group17in the periodic table.
A periodic table is an arrangement of elements based on their atomic
numbers and chemical properties .
It is divided into 18 groups and 7 periods running vertically and horizontally
respectively.
The periodic table accommodates a discrete combination of metal, nonmetals, and metalloids .
The elements in the periodic table are arranged horizontally in ascending
order of their atomic numbers known as periods.
Vertically the elements having identical chemical properties are clubbed
together known as groups.
The 18 groups are also known as columns and the 7 periods are also known
as the rows .
Explanation:
Periods:
Elements are arranged in increasing the atomic number of elements in a
period .
One extra electron gets added to the outermost shell as we move along the
periods from left to right.
The electron gets added to the same shell or orbit and thus the electrons
present for bonding increase by one unit.
Thus, the shell number remains the same but the number of electrons
present for bonding increases along a period.
Groups:
Elements having the same number of outer electrons are put in the same
group of the periodic table.
When we move down a group, one extra shell gets added to the elements.
The outermost shell has electrons present for bonding .
Though the number of shells increases as we go down in a group , the
number of electrons in the outermost shell remains the same.
For example, the Halogens F, Cl, Br, I, At all belong to group 17 and have 7
electrons in the outermost shell.
Similarly, Group 16 elements have 6 electrons in the outermost shell, group 15
has 5 electrons in the outermost shell, and so on.
Group number Common name Number of electrons for bonding
1 Alkali metals 1
2 Alkaline earth metals 2
14 Crystallogens 4
15 Pnictogens 5
16 Chalcogens 6
17 Halogens 7
18 Noble gases 8
Hence, group 17 is called halogens.
30. Answer: b
Explanation:
The government appointed senior IAS officer S Selvakumar as Chairman and
Managing Director (CMD) ofSecurity Printing and Minting Corporation of India
Ltd (SPMCIL).
Mr. Selvakumar has replaced Mr. Anurag Agarwal.
The SPMCIL is responsible for producing coins, banknotes, postage stamps,
non-judicial stamps, and other official documents.
31. Answer: b
Explanation:
⇒ Distance covered using litre = 44 km
⇒ Distance covered using 11/4 litres = 44 km
⇒ Distance covered using 1 litre = 44 × (4/11) = 16 km
32. Answer: a
Explanation:
Two lines are intersecting each other in figure A, B and C, but in figure D Both the
lines are parallel to each other.
Hence, “D” is the odd one.
33. Answer: b
Explanation:
Explanation:
Testosterone is the hormone that develops male characteristics in the human
body. When XY chromosomes meet, they form a male body. It is a hormone
secreted by the male reproductive organ Testes.
Testosterone plays a key role in the development of male reproductive tissues
such as the testes and prostate, as well as promoting secondary sexual
characteristics such as increased muscle and bone mass , and the growth
of body hair.
Additional Information
Insulin is a hormone secreted by the β cells of islets of Langerhans. Insulin is
released into the bloodstream to lower down blood sugar levels and prevent
hyperglycemia.
24
3
Thyroxine: It is an endocrine secretion of the thyroid gland. The thyroid gland
requires 120 microgram Iodine per day for the production of thyroxine It
regulates the basal metabolic rate of the body.
34. Answer: a
Explanation:
The first Khelo India School Games was held in New Delhi whereHaryana
topped the overall medal tally with 102 medals- 38 gold and 26 silver.
Maharashtra won 110 medals (36 gold) and finished second while Delhi with 94
medals came third.
Sports Minister, Col Rajyavardhan Rathore presented the trophy to the top
state Haryana.
The first Khelo India School Games were launched by Prime Minister Narendra
Modi at Indira Gandhi Indoor Stadium in New Delhi.
It was introduced to revive the sports culture in India at the grass-root level.
35. Answer: d
Explanation:
Velu Thampi Dalava was the ruler of the Indian kingdom ofTravancorebetween
1802 and 1809.
He is best known to rebel against the British East India Company's supremacy
in India.
36. Answer: d
Explanation:
Here, analogy pair is Glass that is transparent and wood will be opaque.
Hence, “opaque” is the correct answer.
37. Answer: c
Explanation:
CONCEPT:
Kinetic energy (K.E): The energy possessed by a body by the virtue of its
motion is called kinetic energy.
The expression for kinetic energy is given by:
Where m = mass of the body and v = velocity of the body
Momentum (p) : The product of mass and velocity is called momentum.
Momentum (p) = mass (m) × velocity (v)
The relationship between the kinetic energy and Linear momentum is given by:
As we know,
Divide numerator and denominator by m, we get
[p = mv]
EXPLANATION:
Given that:
KE = mv
2
1 2
KE = mv
2
1 2
KE = 2 =
1
m
m v
2 2 = 2
1
m
(mv)
2
2
1
m
p
2
∴ KE = 2
1
m
p
2
p = 2mKE
K.E 1 = K.E 2= K.E (let say)
The relation between the momentum and the kinetic energy is given by:
But as K.E is same
∴
Or,
Here, if m 1 > m 2
then p 1 > p 2
If two unequal masses possess the same kinetic energy, then the heavier mass
has greater momentum . So option 3 is correct.
38. Answer: b
Explanation:
Suppose 25 boys earn Rs. x in 6 days, then according to question,
⇒ (15 × 5)/750 = (25 × 6)/x
⇒ x = 1500
∴ 25 boys will earn Rs. 1500 in 6 days
39. Answer: d
Explanation:
The number of water molecules that combine chemically in definite molecular
proportion, with the concerned salt in the crystalline state is known as the
water of crystallization.
Baking soda does NOT possess water of crystallization while other three do so.
P = 2m K.E
P ∝ m
P =2
P1
m2
m1
Compounds Chemical Formula
Gypsum CaSO₄·2H₂O
Washing soda Na 2CO 3
Copper sulphate CuSO 4
Baking soda NaHCO 3
40. Answer: c
Explanation:
The correct answer is Upwards positive.
Key Points
The velocity of a vertically thrown ball, with time, will be “up” in the positive
direction.
Gravity pulls the ball down, and since that is the only force acting on the ball,
neglecting air resistance, the acceleration is always 9.8 m/s
2 down or -9.8
m/s
2
.
v(t) = v0 + at, so v(t) = v0 - 9.8t.
CONCEPT :
Velocity: The rate of change of position i.e. rate of displacement with time is
called velocity .
Where s 2 = displacement of the object at t 2 and s 1 = displacement of the object
at t 1
It is a vector quantity having the symbol .
EXPLANATION :
When the ball goes upwards the direction of the velocity of the ball decreases
but in the cartesian plane when the ball goes upward its speed is positive and
when the ball comes downward its velocity is negative.
Additional Information
The velocity and time are linearly proportional to each other which is the
same as the equation of a straight line .
Therefore the correct velocity-time graph is
v = t −t = 2 1
s2−s1
Δt
Δs
v
41. Answer: c
Explanation:
The statement talks about the definition and process of sustainability and its
concurrent practices. It also talks about the human capital is the underlying basis
for all sustainable approaches. Hence assumption I follows.
Assumption II seems not to connect with the statement, as, it is moving to investors
and invest. So, Assumption II not follows.
Hence, the correct answer is "Only assumption I is implicit" .
42. Answer: c
Explanation:
Table is made of wood and cloth is different.
Therefore, thebest possible Venn diagramrepresentation will be,
Hence, “option 3” is the correct answer.
Mistake Points
Some tables are made of plastic too. However, an option indicating this is not
given.
We must choose the best possible option from the given ones.
43. Answer: d
Explanation:
Hence, North become “north-west”.
44. Answer: b
Explanation:
⇒ Milk used to make 200 gms of panner = 1 litre
⇒ Milk used to make 20 kgs paneer = (20 × 1000/200) × 1 = 100 litre
⇒ Cost of 1 litre milk = Rs. 40
⇒ Cost of 100 litre Milk = 100 × 40 = Rs. 4000
45. Answer: d
Explanation:
Given:
x 2 – x – 1 = 0
Formula used:
If the given equation is ax
2 + bx + c = 0
Then Sum of roots = -b/a
And Product of roots = c/a
Calculation:
As α and β are roots of x
2– x – 1 = 0, then
⇒ α + β = -(-1) = 1
⇒ αβ = -1
Now, if (α/β) and (β/α) are roots then,
⇒ Sum of roots = (α/β) + (β/α)
⇒ Sum of rrots = (α
2+ β
2
)/αβ
⇒ Sum of roots = [(α + β)
2– 2αβ]/αβ
⇒ Sum of rrots = (1)
2– 2(-1)]/(-1) = -3
⇒ Product of roots = (α/β) × (β/α) = 1
Now, then the equation is,
⇒ x
2– (Sum of roots)x + Product of roots = 0
⇒ x
2– (-3)x + (1) = 0
⇒ x
2+ 3x + 1 = 0
46. Answer: c
Explanation:
⇒ [(s – a)
2+ (s – b)
2+ (s – c)
2+ s
2
],
⇒ (s
2+ a
2– 2as) + (s
2+ b
2– 2sb) + (s
2+ c
2– 2sc) + s
2
,
⇒ 4s
2+ (a
2+ b
2+ c
2
) – 2s(a + b + c),
⇒ 4s
2+ a
2+ b
2+ c
2– 4s
2
,
⇒ a
2+ b
2+ c
2
47. Answer: c
Explanation:
In figure A, B and C arrow is moving in a clockwise direction but in figure, D arrow is
moving in an anticlockwise direction.
Hence, “figure D” is odd one out.
48. Answer: b
Explanation:
The minimum possible Venn diagram of the given statements,
Conclusions:
1) All brakes are paddles → False (it is possible but not definite)
2) Some brakes are paddles → True.
3) No brake is glass → False (it is possible but not definite)
Hence, only conclusion 2 follows.
49. Answer: a
Explanation:
Hydra can reproduce by regeneration and budding .
In budding, initially buds appear as a small bulge. They further grow, and
within 2-4 days they become fully-formed hydra. Then it detaches from the
parent body.
In regeneration, regrowth of damaged or lost part takes place.
Hydra belongs to Phylum Coelenterata.
Yeast is a fungi and it reproduces asexually through budding.
Plasmodium is a protozoan and it has sexual cycle in mosquito and asexual
cycle in humans. In asexual cycle it undergoes multiple fission.
Planaria reproduces asexually through regeneration. In fact it possess the
highest power of regeneration.
50. Answer: b
Explanation:
Here, axes are shifting 45 degrees in the Anticlockwise direction, hence, northeast
would become north direction.
Similarly, the northeast will be there in place of the East.
Hence, East will become “North-East”
51. Answer: a
Explanation:
Karewas are lacustrine deposits (deposits in a lake) in the valley of Kashmir
and in Bhadarwah Valley of the Jammu division of Jammu and Kashmir.
These are the flat-topped mounds that border the Kashmir valley on all sides.
They are characterized by fossils of mammals and at places by peat. The
various crops grown in this area are saffron, almond, apples, walnut, peaches,
pears, cherry and plum.
Ling nut is grown in tropical and subtropical areas of West Bengal, Bihar
and Jharkhand.
52. Answer: b
Explanation:
According to divisibility rule of 6, the number is divisible by 6 if it is divisible by 2 and
3 both. This number is divisible by 2, now
⇒ sum of digits of 987x54 = 9 + 8 + 7 + x + 5 + 4 = 33 + x
Now, this number is divisible by 3 if x = 0, 3, 6, 9
So,
⇒ x = 3
53. Answer: c
Explanation:
Electric bulbs are usually filled with chemically-inactive gases like Argon and
Nitrogen.
When a bulb is filled with an inert gas, it slows down the evaporation of the
tungsten filament compared to operating it in a vacuum.
This allows greater temperatures and therefore greater efficacy with less
reduction in filament life.
54. Answer: d
Explanation:
Let the initial length and breadth of rectangle be l and b respectively
⇒ New length = l + 8% of l = 1.08l
⇒ New breadth = b + 12% of b = 1.12b
⇒ New area = 1.08l × 1.12b = 1.2096lb
⇒ Percentage increase = {(1.2096lb – lb)/lb} × 100 = 20.96%
55. Answer: d
Explanation:
The correct answer is Moseley .
Key Points
Henry Moseleyclassified elements based on Atomic numbers.
In 1913 A.D. the English scientist Henry Moseley demonstrated, with the help of
the experiments done using an X-ray tube, that the atomic number (Z) of an
element corresponds to the positive charge on the nucleus or the number of
protons in the nucleus of the atom of that element.
This revealed that ‘atomic number’ is a more fundamental property of an
element than its atomic mass.
56. Answer: a
Explanation:
Tamil Nadu's Anukreethy Vaswas named Miss India 2018.
The 55
th Femina Miss India 2018 was held Mumbai.
Miss World 2017 Manushi Chhillar , crowned Anukreethy, who will go on to
represent India at Miss World.
Haryana's Meenakshi Chaudhary stood second and Andhra Pradesh's Shreya
Rao Kamavarapu ranked third. Malaika Arora and Irfan Pathan were among
the judges.
57. Answer: b
Explanation:
Endothermic
reaction
An endothermic reaction is that in which heat is
absorbed.
E. g - Melting of Ice, Evaporation of Liquids.
Exothermic
reaction
An exothermic reaction is a reaction in which heat is
released or generated.
E. g - Combustion of fuels, Thermite reaction.
Combustion
reaction
Burning of any substance in the presence of Air/ Oxygen
is called a Combustion Reaction.
E.g - Burning of coal or wood, Gasoline in cars
Displacement
reaction
A reaction in which a more reactive element displaces a
less reactive element from its compound.
Both metals and non-metals take part in displacement
reactions.
E.g - Thermite Welding, Steelmaking.
58. Answer: d
Explanation:
Yuzvendra Chahal is a former chess player and anIndian Cricketerwho
represented India in both One day international and Twenty-20 Internationals
He played for Mumbai Indians, Royal Challengers Bangalore and now playing
for Rajasthan Royals (2022) in the IPL and for Haryana in domestic cricket.
59. Answer: c
Explanation:
Aamir Khanwon the best actor award at 2017 Filmfare awards for playing the
character of Mahavir Singh Phogat in the movie Dangal.
The 1st Filmfare Awards were held on March 21, 1954, which honoured the best
in Hindi cinema in 1953.
That year they were known as Clare Awards, after Clare Mendonca, a film critic
of The Times of India who had died in the same year. The award for best actor
was won by Dilip Kumar for his movie Daag.
64
th Filmfare Awards 2019
Best Actor Ranbir Kapoor for Sanju
Best Actress Alia Bhatt for Raazi
Best Director Meghna Gulzar for Raazi
Critics Best Actor Ranveer Singh for Padamavat
Best Film Raazi
Critics Best Film Andhadhun
60. Answer: d
Explanation:
Nail, hair and toe are parts of the body and thus form a group whereas acne is a
skin disease.
Hence, acne(C) does not belong to the group.
61. Answer: d
Explanation:
Here, the pattern followed here is,
Hence, “34” is the correct answer.
62. Answer: d
Explanation:
The minimum possible Venn diagram of the given statements,
Conclusions:
All plastic are covers → False (it is possible but not definite)
All toxic are covers → False (it is possible but not definite)
Hence, “No conclusions follow”.
63. Answer: b
Explanation:
Let the four numbers be a, b, c and d in increasing order
⇒ Mean of the three smallest number = (a + b + c)/3
⇒ 9 = (a + b + c)/3
⇒ a + b + c = 27 ----(1)
Also,
⇒ Mean of the three largest numbers = (b + c + d)/3
⇒ 11 = (b + c + d)/3
⇒ b + c + d = 33 ----(2)
Subtracting equation 1 from equation 2, we get
⇒ d – a = 6
∴ The range of data set is 6.
64. Answer: c
Explanation:
Centre of gravityis an imaginary point in a body of matter where the entire
weight of an object acts.
This is sometimes useful in designing static structures (e.g., buildings and
bridges) or tp predict the behaviour of a moving body when it is acted on by
gravity.
65. Answer: c
Explanation:
Given:
Concept Used:
Calculation:
⇒
⇒ 22 – [23 – {24 – (27 + 5)}]
⇒ 22 – [23 – {24 – 32}]
⇒ 22 – [23 – (-8)]
⇒ 22 – [23 + 8]
⇒ 22 – 31
∴ -9
66. Answer: c
Explanation:
22 − [23 − {24 − (27 − 25 − 30)}]
22 − [23 − {24 − (27 − −5)}]
Symbol + ÷ - ×
Meaning ÷ - × +
Given expression: 80 + 20 ÷ 5 - 12 × 92
After changing the symbols: 80 ÷ 20 -5 × 12 +92
= 4 - 5 × 12 + 92
= 4 - 60 + 92
= 96 - 60
= 36
Hence, 36 is the correct answer.
67. Answer: b
Explanation:
The mass of the moon is 1/100 times the mass of Earth and the radius of the
moon is ¼ times the radius of the Earth.
As a result, the gravitational attraction on the moon is about one-sixth when
compared to that of the Earth.
The weight of an object depends on the value of g, i.e. acceleration due to
gravity.
Hence the weight of an object on the moon is1/6
thof the weight on the Earth.
68. Answer: b
Explanation:
Hence, “21” is the correct answer.
69. Answer: a
Explanation:
Here, by combining A, C and D we can get the question figure, as following,
Hence, “C, D and A” is the correct answer.
70. Answer: c
Explanation:
Calcium Hydroxide isCa(OH) 2which is also known as Slaked lime.
It is an inorganic compound.
It is a white powder or colorless crystal which is obtained when Quicklime
(calcium oxide) is mixed with water.
It is used in the Cement Industry.
71. Answer: c
Explanation:
TheGospel of Yudasis the book about the politics of faithfulness and the price of
idealism written by K. R. Meera.
Aarachar and Nethromeelanam are also other famous novels written by K.R
Meera.
72. Answer: d
Explanation:
Let the total number of girls be x.
⇒ Average marks of boys or girls = Total marks obtained/no. of boys or girls
Now,
⇒ Total marks obtain by Boys = 13 × 9 = 117
⇒ Total marks obtain by Girls = 15 × x = 15x
Now,
⇒ Total average = Total marks obtained/total students
⇒ 14.28 = (117 + 15x) / (9 + x)
⇒ 128.52 + 14.28x = 117 + 15x
⇒ 0.72x = 11.52
⇒ x = 16
⇒ Total number of students = 16 + 9 = 25
∴ There were 25 students in the class.
73. Answer: d
Explanation:
From the given information we can draw following family tree,
Clearly, Mamata’s brother is maternal uncle of Surya’s brother.
Hence, “Maternal uncle” is the correct answer.
74. Answer: a
Explanation:
Launchpad Accelerator Indiais a mentorship program launched in 2018 that
would aim to support Indian startups that deploy artificial intelligence and
machine learning to build solutions for local needs.
The three-month accelerator will provide a cohort of 8-10 Indian startups with
the mentorship of Google.
The start-ups will also get up to $1,00,000 of Google Cloud credits.
75. Answer: c
Explanation:
It is known that light ray that is travelling from a Rarer medium to a Denser
medium will bend towards the normal at the point of incidence and
conversely, a ray of light travelling from a Denser medium to the Rarer medium
bends away from the normal.
Glass is denser than Water, therefore, a ray of light travelling from Water to
Glass will bendtowards the normal and slow down.
Glass has a higher refractive index than water. The refractive index of window
glass is 1.52, and that of pure water is 1.33 .
76. Answer: c
Explanation:
Here, if the question figure is rotated by 90° clockwise we get the figure in option D.
Hence, “D” is the correct answer.
77. Answer: c
Explanation:
→ Given data -
Mass, m = 40 kg
Height, h = 5m
Time, t = 4s
Work done, W = mgh
W = 40 × 10 × 5 [g = 10 m/s
2
, given]
W = 2000 joules
→ Power, P = work done /time
P = 2000/4
P = 500 joule/sec
P =500 W
78. Answer: b
Explanation:
⇒ (1/2) ∶ (2/3) ∶ 3 ∶ 4 = 3 ∶ 4 ∶ 18 ∶ 24
⇒ First part = {3/(3 + 4 + 18 + 24)} × 686 = (3/49) × 686 = Rs. 42
79. Answer: b
Explanation:
National Voters Day is celebrated onJanuary 25every year to encourage more
young voters to take part in the political process.
It started from January 25
th , 2011 to mark the Commission's foundation day.
The Election Commission of India (ECI) celebrated 8
th National Voters Day
across the nation on 25
th January 2018 for enhanced participation of citizens
in the electoral process.
80. Answer: b
Explanation:
TheVolgais the longest river in Europe.
It is the national river of Russia flowing at a distance of 2294 miles.
It originates in the Valdai Hills northwest of Moscow and discharges into the
Caspian Sea. Out of the 20 largest cities of Russia, 11 are located in the river’s
drainage basin.
It has two main tributaries named Kama and Oka .
The Danube is Europe's second longest river, after the Volga and flows through
10 countries.
81. Answer: a
Explanation:
⇒ Compounded Amount = Principal × {1 + (rate%/4)}
(4 × time)
⇒ 50000{1 + (12/400)}
{4 × (1/2)} = 50000 × (103/100)
2= Rs. 53045
⇒ Compound Interest = Amount – Principal = Rs. (53045 – 50000) = Rs. 3045
82. Answer: b
Explanation:
The Women and Child Development Minister Maneka Gandhi launched a
social media campaign to markDaughters’ Dayon August 11, 2016.
In this campaign, the entire week was celebrated as Daughters’ Week as part
of the government’s ‘Beti Bachao, Beti Padhao’ programme to check female
foeticide, improve sex ratio and educate girls across India.
83. Answer: d
Explanation:
The induced current is highest when the direction of motion of the coil is
at90°or perpendicular with respect to the magnetic field, as the flux cutting is
maximum in this case.
While it is minimum when the direction of motion of the coil is at 180° or parallel
with respect to the magnetic field, as here the flux cutting by the coil will be
minimum.
84. Answer: a
Explanation:
⇒ Area cultivated in West Bengal = 22%
⇒ Area cultivated in Tamil Nadu = 16%
⇒ Required % = [(22 – 16)%/16%] × 100 = 37.5%
85. Answer: b
Explanation:
⇒ Mobile phone manufactured by DEF = 5% of 1240000 = 62000
86. Answer: d
Explanation:
The breakdown of pyruvate using O 2 takes place in the mitochondria matrix.
When glucose gets converted to pyruvate by glycolysis, only a small fraction of
the total free energy potentially available from the glucose is released.
Inmitochondria, when the metabolism of sugars is completed: the pyruvate is
imported into the mitochondria and oxidized by O 2
to CO 2and H 2O.
This allows 15 times more ATP to be made as compared to that produced by
glycolysis alone.
Points to remember about Mitochondria
It is called the Powerhouse of the cell
They make energy through respiration
Adenosine triphosphate (ATP) is made in Mitochondria
Mitochondria are found in the Cytoplasm within the cell
The outer membrane of Mitochondria is made up of a phospholipid bilayer.
87. Answer: d
Explanation:
The correct answer is India.
Key Points
Indiais the only country to win the ICC Under-19 Cricket World Cup four times.
India won the ICC Under-19 Cricket World Cup in the year 2000, 2008, 2012 and
2018.
The 2018 Under-19 Cricket World Cup was held in New Zealand .
India beat Australia by 8 wickets in the finals to win their fourth Under-19 World
Cup, the most by any side.
Rahul Dravid is the coach of the Indian Under-19 cricket team.
Additional Information
Season Year
ICC Under-19 World Cup (in Sri Lanka) 1999/2000
ICC Under-19 World Cup (in Malaysia) 2007/2008
ICC Under-19 World Cup (in Australia) 2012
ICC Under-19 World Cup (in New Zealand) 2017/2018
ICC Under-19 World Cup (in West Indies) 2021/2022
88. Answer: b
Explanation:
⇒ 11025 = 5
2× 21
2
⇒ 6025 = 5
2× 241
⇒ 9025 = 5
2× 19
2
⇒ 3025 = 5
2× 11
2
∴ 6025 will have irrational square root.
89. Answer: d
Explanation:
Mamang Daiwas the winner of the Sahitya Akademi Award 2017 from the
above.
She won the award for her English novel The Black Hill .
Ramesh Kuntal Megh also won 2017 Sahitya Akademi award for the work Vishw
Mithak Sarit Sagar, a literary criticism in Hindi.
Sahitya Akademi announces its annual Sahitya Akademi Awards in 24
languages. The award is in the form of a casket containing an engraved
copper-plaque, a shawl and a cheque of Rs. 1 lakh.
Anees Salim won the 2018 Sahitya Akademi award in the English language for
his novel ‘The Blind Lady's Descendants’.
90. Answer: d
Explanation:
Given:
(7 95 – 3 58 )
Concept used:
Cyclicity of 7 is 4
Cyclicity of 3 is 4
Calculation:
7
95 = 7
(4 × 23) + 3 = 1 × 7
3 = 343
⇒ Unit digit of 7
95 = 3
3
58 = 3
(4 × 14) + 2 = 1 × 3
2 = 9
⇒ Unit digit of 3
58 = 9
Unit digit of (7
95 – 3
58
) = 3 – 9 = -6 or 10 - 6 = 4
∴ Unit place will be 4
Note: 3 - 9 = -6 because we have to find the unit digit. whenever the result is
negative add 10 in it.
91. Answer: d
Explanation:
Diagonals of a Rhombus are perpendicular bisector
Let ABCD be a rhombus and AC = 6 cm with midpoint O and Side AB = 6 cm
So, in ΔAOB,
⇒ AO
2+ OB
2= AB
2
⇒ (6/2)
2+ OB
2= 6
2
⇒ 9 + OB
2= 36
⇒ OB
2= 27
⇒ OB = 3√3 cm
⇒ BD = 2 × OB = 6√3 cm
⇒ Area of Rhombus = (1/2) × (Product of diagonal of Rhombus)
⇒ (1/2) × (6 × 6√3) = 18√3 cm 2
92. Answer: a
Explanation:
75 ∶ 125
= 25 × 3 ∶ 25 × 5
= 3 ∶ 5
93. Answer: d
Explanation:
The correct answer is Copper .
Key Points
Copperis a very good conductor.
It is malleable and ductile, and also offers high resistance to corrosion.
It is widely used for wires, cables, etc.
Additional Information
Properties Definition
Malleable
A malleable material is one that can be easily converted into a thin
sheet by hammering. Gold is the most malleable metal.
Ductile
A material that can easily be stretched into a wire when pulled. Here
also gold is considered the most ductile metal.
Luster
It is a property that describes how light is reflected on the surface of a
mineral. Mineralogists consider this when trying to determine the
identity of a mineral.
Element Atomic No.
Phosphorus 15
Sulfur 16
Carbon 6
Copper 29
94. Answer: b
Explanation:
Concept:
Sound: It is a form of energy produced by vibration or disturbance that propagates
in a medium.
It travels in the form of longitudinal waves (Compression or rarefaction)
Sound waves are of three types:
Infrasonic waves: The sound waves of frequency between 0 Hz to 20 Hz are
called infrasonic waves. Sound produced by thunders, volcano etc. Animals
like elephants and whales can hear infrasonic sounds.
Audible waves: The sound waves of frequency between 20 Hz to 20,000 Hz are
called Audible waves. Human ear can able to listen to these frequencies
Ultrasonic waves: The sound waves of frequency above 20,000 Hz are called
ultrasonic waves. Many animals like bats, cats, dogs, mice etc.
So these are the ratios of different speed of the body, for
1. Hypersonic > 5.0 mach
2. Supersonic > 1 mach
3. Subsonic < 1 mach
Explanation:
Ultrasonic - Above 20000 Hz or 20 kHz (Above audible range)
Infrasonic - Between 0 Hz to 20 Hz (Below audible range)
Supersonic - Speed of Sound
95. Answer: b
Explanation:
The government launched a mobile application, ahead of International Yoga
Day in 2017, through which people can share their experience of participating
in yoga and related activities.
Union Minister for Science and Technology Harsh Vardhanlaunched the
application, Celebrating Yoga.
The app will give information to its users about studies conducted on yoga
under the department's programme.
96. Answer: d
Explanation:
CONCEPT:
The distance travelled by a body in n
th second is given by:
S n = u + a/2 (2n - 1)
Where u is the initial velocity of the body, a is acceleration, and n is nth second.
CALCULATION:
Given that:
The ball is dropped from 80 m height, so initial velocity (u) = 0 m/s
Acceleration is due to gravity (a) = 10 m/s
2
and n = 4
For nth second , S n= u + a/2 (2n - 1)
Distance travelled in 4th second (S 4) = 0 + 10/2 (2 × 4 - 1) = 35 m
Therefore, the distance travelled by the ball in the fourth second will be 35 m.
So option 4 is correct .
Alternate Method
Total Distance traveled in 3 seconds , S3 = = = 45m .
Total Distance traveled in 4 seconds , S4= = = 80 m .
Thus, Distance travelled in 4 th second would be = S4 - S 3
⇒ S4 - S 3 = 80 - 45 = 35m .
Therefore, the distance traveled by the ball in the fourth second will be 35 m. So
option 4 is correct .
97. Answer: b
Explanation:
ut + 2
at
2
0 + 2 ×
1 10 × 3 × 3
ut + 2
at
2
0 + 2 ×
1 10 × 4 × 4
The main constituent ofvinegaris Acetic acid (CH3COOH), after adding 5-8% of
acetic acid in water it becomes vinegar.
Vinegar is acidic in nature having a pH around 2.5.
It is used as a food preservative and is also useful for medicinal uses,
household purposes, and in the food Industry.
When acetic acid is undiluted, it is sometimes called glacial acetic acid .
98. Answer: b
Explanation:
⇒ Present age of P = 15
⇒ Present age of Q = 26 – 6 = 20
⇒ Required ratio = 15 ∶ 20 = 3 ∶ 4
99. Answer: b
Explanation:
In the last fifteen to eighteen years, the internet has expanded rapidly all over the
world, leading to huge levels of exposure and judgement directed at teenagers. This
has led to rising stress levels amongst teenagers who were not present in the last
century. Hence, the argument I holds true.
A situation that might cause stress to one person might or might not be stressful to
others. Hence, it is true that stress is a relative perception that can be managed
with proper guidance.
Therefore, argument II also holds true.
100. Answer: b
Explanation:
As 2000 is divisible by 400 the number of odd days is 0.
Number of leap years till 2005 = 1 (2004)
Number of ordinary years till 2005 = 4
Number of odd days till 2006 = 4 + (1 × 2) = 6 odd days
Number of odd days in January, 2006 = 3
Number of odd days in February, 2006 = 0
Total number of odd days till 24
th March 2006 = 6 + 3 + 24 = 33 odd days = 5 odd
days
So, the day on 24
th March 2006 is Friday.

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