RRB NTPC Previous Year Question Paper Mock (Solutions) · 2020. 10. 3. · carbohydrates, and...

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RRB NTPC Previous Year Question Paper Mock – (Solutions)

S1. Ans.(d)

Sol. Naxalbari uprising was an armed peasant revolt in 1967 in Naxalbari block of Siliguri subdivision in

Darjeeling district, West Bengal, India. It was mainly led by local tribals and the radical communist

leaders of Bengal and further developed into Communist Party of India (Marxist–Leninist) in 1969.

S2. Ans.(c)

Sol. Roger Federer, (born August 8, 1981, Basel, Switzerland), Swiss tennis player, who dominated the

sport in the early 21st century with his exceptional all-around game. His total of 20 career men's singles

Grand Slam championships is the most in tennis history.

S3. Ans.(c)

S4. Ans.(a)

S5. Ans.(b)

S6. Ans.(b)

Sol. The chemical name of common salt is sodium chloride. The

chemical formula of sodium chloride is NaCl.

S7. Ans.(c)

Sol.

D → 4

B → 8

M → 7

T → 0

X → 3

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S8. Ans.(b)

Sol. Functioning as an exocrine gland, the pancreas excretes enzymes to break down the proteins, lipids,

carbohydrates, and nucleic acids in food. Functioning as an endocrine gland, the pancreas secretes the

hormones insulin and glucagon to control blood sugar levels throughout the day.

S9. Ans.(d)

Sol. Dari is the most widely spoken language of Afghanistan's official languages and acts as a lingua

franca for the country.

S10. Ans.(a)

Sol. Suresh Prabhakar Prabhu is an Indian politician and currently serving as the Minister of Commerce &

Industry and Civil Aviation under the Modi government. He is a Chartered Accountant by profession and

a member of the Institute of Chartered Accountants of India.

S11. Ans.(d)

Sol. In India, most villages suffer due to Water pollution.

S12. Ans.(a)

Sol. 2x (w–z)

⇒ 2×3 (–

)

⇒ –9

S13. Ans.(c)

Sol. Hindustan Socialist Republican Association was a revolutionary organisation, also known as the

Hindustan Socialist Republican Army, established in 1928 at Feroz Shah Kotla in New Delhi by

Chandrasekhar Azad, Bhagat Singh, Sukhdev Thapar and others.

S14. Ans.(a)

Sol. a, b = 4, 9

LCM = HCF × a × b

= 11 × 4 × 9

= 396

S15. Ans.(a)

Sol. The Iron pillar of Delhi and is currently standing in the Qutb complex at Mehrauli in Delhi, India. It is

famous for the rust-resistant composition of the metals used in it

S16. Ans.(d)

Sol. Interchanging + and ÷

15 ÷ 3×9 –4 + 16 = 57

⇒ 57=57


S17. Ans.(a)

Sol. A decibel meter is a measuring instrument used to assess noise or sound levels by measuring sound

pressure

S18. Ans.(b)

Sol. Sovereign means government is under control of the highest authority, and India is a sovereign

country. India’s parliament is in Delhi. But having a parliament does not satisfy the statement of being a

sovereign.

S19. Ans.(c)

Sol. In statement there is no mention of increasing production or import. So no conclusion can be

followed.

S20. Ans.(d)

Sol.

Jug capacity = 60x

Time taken by 2 holes together =

⇒

minutes.

S21. Ans.(c)

Sol.

S22. Ans.(a)

Sol.

Diagonal BD = √

= 3 √ cm


S23. Ans.(d)

Sol. A landfill site is a site for the disposal of waste materials by burial. It is the oldest form of waste

treatment. Historically, landfills have been the most common method of organized waste disposal and

remain so in many places around the world

S24. Ans.(a)

Sol. 3.5 min → Rs 10

1 min →

min →

⇒ Rs 11.9

S25. Ans.(c)

Sol. Satish Dhawan Space Centre or Sriharikota Range is a rocket launch centre operated by Indian Space

Research Organisation. It is located in Sriharikota in Andhra Pradesh

S26. Ans.(a)

Sol. Bloodless surgery is done with Lasers, it mainly cuts through tissue using the energy from light.

S27. Ans.(c)

Sol. 35968 ÷ 562 ÷ 8

=64 ÷ 8

=8

S28. Ans.(a)

Sol. W+R = 9 hr 15 min …. (i)

2W = 11 hr 12 min ….(ii)

(i)× 2 – (ii)

(2W + 2R)– (2W) = 18hr 30 min – 11 hr 12 min

2 R = 7 hr 18 min

S29. Ans.(a)

Sol. Avg speed =

=

= 37.75 km/hr.

S30. Ans.(b)

Sol. Total distance by S = 1795

Average distance = 1795 / 6

S31. Ans.(d)

Sol. Required distance = 1632 km

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S32. Ans.(c)

Sol. As the chips contain fats and oils, they are likely to get rancid. Therefore, to prevent this, nitrogen gas

is flushed into bags of chips by manufacturers. Nitrogen does not react with fats and oils. As a result,

rancidity does not take place.

S33. Ans.(d)

Sol. ATQ

85% → 3400

115 % → 3400 ×

= Rs 4600

S34. Ans.(b)

Sol. SCOOTER has 7 alphabets

So, 7×2 = 14

S35. Ans.(a)

Sol. Man has lungs

Similarly, fish has gills.

S36. Ans.(c)

Sol. x +2x +4x+5x=156

⇒ 12x = 156

⇒ x = 13

Respective Ratio = 13, 26, 52 and 65

S37. Ans.(a)

Sol.

Required Ratio =

S38. Ans.(b)

Sol. Required no = 6

S39. Ans.(c)

Sol. Required no = 21+21+21=63


S40. Ans.(a)

Sol. In 1998 we were using more than 2bn floppy disks a year - but new technology and the rise of digital

photography and music has left the floppy disk almost obsolete.

S41. Ans.(d)

Sol. Reason is false because combination of two parts of hydrogen and one part of oxygen makes water.

S42. Ans.(d)

Sol. 51–8=43

S43. Ans.(b)

Sol. Bhimbetka rock shelters, series of natural rock shelters in the foothills of the Vindhya Range, central

India. They are situated some 28 miles (45 km) south of Bhopal, in west-central Madhya Pradesh state.

S44. Ans.(b)

Sol. 19 × 9 – 51 + 171 ÷ 19

= 171 – 51 + 9

= 129

S45. Ans.(a)

Sol. The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in

1990 and remains in operation.

S46. Ans.(c)

Sol.

,

,

S47. Ans.(c)

Sol. Pandit Dr. Lakshminarayana Subramaniam (born 23 July 1947) is an acclaimed Indian violinist,

composer and conductor, trained in the classical Carnatic music tradition and Western classical music

S48. Ans.(d)

Sol. The Constitution of India is the longest written constitution of any sovereign country in the world,

containing 444 articles in 22 parts, 12 schedules and 118 amendments, with 146,385 words in its

English-language version, while the Constitution of Monaco is the shortest written constitution,

containing 10 chapters

S49. Ans.(d)

Sol. Let total distance = 3d

ATQ

⇒ d = 1

Total distance = 3 km.


S50. Ans.(c)

Sol. Checking option (c)

7× 3 –1

=21–1 = 20

S51. Ans.(c)

Sol. The Golden Glove Award is awarded to the best goalkeeper of the tournament .

S52. Ans.(d)

Sol. Editor is related to Magazine in the same way as director to drama.

S53. Ans.(b)

Sol. The Microvariability and Oscillations of Stars telescope, better known simply as MOST, is Canada's

first space telescope.

S54. Ans.(d)

Sol. Word → saltoteuk

Flower : lotus

Tree : teak

S55. Ans.(c)

Sol. Written backwards

S56. Ans.(c)

Sol. The Triveni Sangam in Allahabad is a confluence of 3 rivers, the Ganges, Yamuna, and Saraswati. Of

these three, the river Saraswati is invisible and is said to flow underground and join the other two rivers

from below. The point of confluence is a sacred place for Hindus

S57. Ans.(a)

Sol. CI = a + b +

%

CI = 3500 × 8.16 %

= 285.6

S58. Ans.(b)

Sol.

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S59. Ans.(b)

Sol. Rate =

time = 4 T

New Rate = 5%

New Time = 2 yrs.

CI = 10000×10.25%

= 1025

Amount = 10000 + 1025

= 11025

S60. Ans.(a)

Sol. 49%

S61. Ans.(c)

Sol. The Sundarbans is the largest single block of tidal halophytic mangrove forest in the world.The

Sunderbans is a UNESCO World Heritage Site covering parts of Bangladesh and Indian state of West

Bengal.

S62. Ans.(c)

Sol. Nanotechnology

S63. Ans.(b)

Sol. S.D. =( )

SD = 12

S64. Ans.(b)

Sol. Gain % = a + b +

= 9 + 9 +

= 18.81%

S65. Ans.(d)

Sol. A person lifting an heavy object is a wrong example of friction.

S66. Ans.(d)

Sol. sin x =

P= 4x, H=5x, B=3x

Now

S67. Ans.(b)

Sol. The first jute mill was established at Rishra, on the River Hooghly near Calcutta in 1855.


S68. Ans.(d)

Sol. A CSS file is a cascading style sheet (CSS) file used to format the contents of a webpage. It contains

customized, global properties for how to display HTML elements.

S69. Ans.(c)

Sol. No of sides =

S70. Ans.(a)

Sol. SP1 = 102

SP2 = 114

So, 12x = Rs3

x = Rs 1/4

SP1 = SP 2

⇒ 102 ×

:114×

= 17 : 19

S71. Ans.(c)

Sol. 14 + 4 ÷ 2 × 8–5

=25

S72. Ans.(b)

Sol. Homo naledi is an extinct species of hominin, which anthropologists first described in September

2015 and have assigned to the genus Homo.It is the most recently discovered link in human evolution.

S73. Ans.(a)

Sol. Aquarium is human a made ecosystem.

S74. Ans.(c)

Sol.

S75. Ans.(a)

Sol. ̅̅̅̅ =

S76. Ans.(c)

Sol. Genetic engineering, also called recombinant DNA technology, involves the group of techniques used

to cut up and join together genetic material, especially DNA from different biological species, and to

introduce the resulting hybrid DNA into an organism in order to form new combinations of heritable

genetic material

S77. Ans.(b)

Sol. Mode: Most frequently occurring value, so 4.


S78. Ans.(a)

Sol. Mouma Das and Soumyajit Ghosh are Indian table tennis players.

S79. Ans.(d)

S80. Ans.(a)

Sol. HIV is not passed from one person to another by Mosquito bite.

S81. Ans.(c)

Sol. Tree is climbed , as cliff is ascended.

S82. Ans.(a)

Sol. Duty is recorded in Roaster, as goods in inventory.

S83. Ans.(a)

S84. Ans.(c)

Sol. A rhombus has 2 (diagonals) axes of reflectional symmetry.

S85. Ans.(b)

Sol. On April 12, 1961, aboard the spacecraft Vostok 1, Soviet cosmonaut Yuri Alekseyevich Gagarin

becomes the first human being to travel into space.

S86. Ans.(c)

Sol. Arnold Schwarzenegger, who was supposed to play the antagonist in Enthiran 2, was not get to play

the role as the deal failed to work out.

S87. Ans.(d)

Sol. 7x+3x²–12x

3x²–5x

S88. Ans.(d)

Sol. I × II = HCF × LCM

3192 = 56 × HCF

HCF = 57

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S89. Ans.(b)

Sol. Galvanization or galvanizing is the process of applying a protective zinc coating to steel or iron, to

prevent rusting.

S90. Ans.(a)

Sol. Archimedes' buoyancy principle states that buoyant force what keeps the ship afloat is equal to the

weight of water that is displaced when the ship enters the ocean.

S91. Ans.(b)

Sol. Mean =

Deviations = 4, 3 ,3 ,3 ,0 ,3 ,2

Mean deviation =

S92. Ans.(b)

Sol. Efficiency ratio = Prashant : Tarun

2 : 1

Total work = (2x + 1x) × 21 = 63x

Tarun alone =

63 days.

S93. Ans.(b)

S94. Ans.(d)

Sol. Indian silk and cotton textiles still held their own in foreign markets, until the middle of the

eighteenth century when the English textile industry began to develop on the basis of new and advanced

technology.

S95. Ans.(c)

Sol. COUNTER → NTERCOU

ANALOGY → LOGYANA

S96. Ans.(a)

Sol. Only conclusion I follows the statement.

tan (A+B) =

=

=

S97. Ans.(b)

Sol. The Forty-Fourth Amendment of 1978 deleted the right to property from the list of fundamental

rights A new provision, Article 300-A, was added to the constitution, which provided that "no person

shall be deprived of his property save by authority of law".


S98. Ans.(b)

Sol. The eusocial, or most social of the insects, are the bees, wasps,

ants, and termites. Subsocial insects such as crickets are not used to

living in close quarters with members of the same species.

S99. Ans.(b)

Sol. – 4 = – 7 + 3x

x = 1

S100. Ans.(b)

Sol. Reason does not explains the cause of energy, it is just giving us

the definition of nuclear fission.
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RRB NTPC Previous Year Question Paper Mock (Solutions) · 2020. 10. 3. · carbohydrates, and...

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