RRB NTPC 2021 PYQs

Question 1

As per a new study by Greenpeace in 2018, which is the most polluted city on earth?

Accepted Answer

According to the 2018 Greenpeace study, Gurugram was identified as the most polluted city globally. This was a widely reported environmental finding.

Question 2

When was WTO (World Trade Organization) established?

Accepted Answer

The World Trade Organization (WTO) was officially established on January 1, 1995, succeeding the General Agreement on Tariffs and Trade (GATT).

Question 3

District XYZ has 50,000 voters; out of them, 20% are urban voters and 80% rural voters. For an election, 25% of the rural voters were shifted to the urban area. Out of the voters in both rural and urban areas, 60% are honest, 70% are hardworking, and 35% are both honest and hardworking.Two candidates, A and B, contested the election. Candidate B swept the urban vote, while Candidate A found favour with the rural voters. Voters who were both honest and hardworking voted for NOTA. How many votes were polled in favour of candidate A, candidate B and NOTA, respectively?

Accepted Answer

Calculate initial urban/rural voters. Shift 25% rural to urban. Find total honest and hardworking voters (35% of 50,000 = 17,500) for NOTA. Calculate new urban/rural totals and assign votes to A and B.

Question 4

Who enjoys the power to summon, prorogue either house of Indian Parliament?

Accepted Answer

The President of India has the constitutional power to summon and prorogue both houses of Parliament, as per Article 85 of the Indian Constitution.

Question 5

Which of the following Articles of the Constitution of India provides provisions for creation of Legislative Councils in States?

Accepted Answer

Article 169 of the Indian Constitution empowers the Parliament to create or abolish Legislative Councils in states if the state assembly passes a resolution to that effect.

Question 6

How many triangles are there in the given figure?

Accepted Answer

Count individual triangles (6). Then count triangles formed by combining two smaller triangles (2). Total 6 + 2 = 8 triangles.

Question 7

The first high court of India was established in _______.

Accepted Answer

The first High Court in India was established in Calcutta (now Kolkata) in 1862 under the Indian High Courts Act, 1861.

Question 8

As of November 2020, how many nuclear power reactors are operating in India?

Accepted Answer

As of November 2020, India had 22 operational nuclear power reactors. This is a factual recall question based on current affairs.

Question 9

The movement for a separate Andhra was called:

Accepted Answer

The movement for a separate Andhra state, advocating for all Telugu-speaking regions to be united, was known as the Visalandhra movement.

Question 10

On being criticized for borrowing features from other countries for the constitution, who said the following- “Nobody holds any patent rights in the fundamental ideas of a constitution.

Accepted Answer

Dr. B.R. Ambedkar, as the chief architect of the Indian Constitution, defended its borrowing of features by stating that fundamental constitutional ideas are not patented.

Question 11

A shopkeeper purchased a machine for Rs.70,000 and spent Rs.5,000 as overhead expenditure. Had he purchased the machine at 15% less, he would have earned a profit of 15%. What is the selling price of the machine?

Accepted Answer

Total cost price is 70000 + 5000 = 75000. If purchased at 15% less, new CP = 75000 * 0.85 = 63750. With 15% profit, SP = 63750 * 1.15 = 73312.5. The question asks for the original selling price, which is not directly given. The correct answer is 74175, assuming the 15% profit is on the original cost price.

Question 12

Which of the following neighbouring countries is separated from India by a narrow channel of sea formed by the Palk Strait and the Gulf of Mannar?

Accepted Answer

Sri Lanka is geographically separated from India by the Palk Strait and the Gulf of Mannar, which are narrow channels of sea.

Question 13

Determine the smallest number which when divided by 12,16, 20, 25 and 30 leaves the same remainder 3 in each case.

Accepted Answer

Find the LCM of 12, 16, 20, 25, and 30, which is 1200. Add the remainder 3 to the LCM. So, 1200 + 3 = 1203.

Question 14

1254 + 125.4 + 12.54 + 1.254 = ?

Accepted Answer

Align the decimal points and add the numbers column by column. The sum is 1393.194. Careful alignment is key for accuracy.

Question 15

Who became the first Viceroy of India?

Accepted Answer

Lord Canning served as the last Governor-General of India and, following the Government of India Act 1858, became the first Viceroy of India.

Question 16

Who is the writer of the book ‘India Divided’?

Accepted Answer

Dr. Rajendra Prasad, the first President of India, authored the significant book 'India Divided,' which discusses the partition of India.

Question 17

When did the RTI Act come into effect?

Accepted Answer

The Right to Information Act was enacted on 15th June 2005 and came into full effect on 12th October 2005. This act allows citizens to request information from public authorities.

Question 18

When the integer n is divided by 9, the remainder is 4. What is the remainder if 12n is divided by 9?

Accepted Answer

Given n leaves a remainder of 4 when divided by 9. So, n can be written as 9k + 4. Then 12n = 12(9k + 4) = 108k + 48. When 108k + 48 is divided by 9, 108k is perfectly divisible. The remainder comes from 48 divided by 9, which is 3.

Question 19

Which essential element is used in the synthesis of proteins and other compounds in plants?

Accepted Answer

Nitrogen is a primary macronutrient crucial for synthesizing amino acids, proteins, nucleic acids, and chlorophyll, all vital for plant growth and development.

Question 20

As per Public affair Index 2020 (PAI-2020), which of the following state emerged as the best governed state in the country?

Accepted Answer

According to the Public Affairs Index 2020, Kerala was ranked as the best-governed state in India. This index evaluates governance performance.