RRB NTPC 2020 PYQs

Question 1

What is to be added to 12% of 2400, so that the sum will be equal to 18% of 5400?

Accepted Answer

Calculate 12% of 2400 (288) and 18% of 5400 (972). Subtract 288 from 972 to find the required number, which is 684.

Question 2

The famous Gol Gumbaz is located in:

Accepted Answer

Gol Gumbaz, known for its whispering gallery, is a prominent historical monument located in Bijapur, which is in the state of Karnataka.

Question 3

If A : B = 15 : 16, B : C = 8 : 25, C : D = 20 : 9, then find A : D.

Accepted Answer

Multiply the given ratios: (A/B) * (B/C) * (C/D) = (15/16) * (8/25) * (20/9). Cancel common terms to get A/D = (15*8*20) / (16*25*9) = 2400 / 3600 = 2/3.

Question 4

Who wrote Gita Govinda?

Accepted Answer

Gita Govinda is a famous 12th-century work composed by the poet Jayadeva. It describes the relationship between Krishna and the Gopis.

Question 5

Which of the following is the administrative capital of South Africa?

Accepted Answer

South Africa has three capitals: Pretoria (administrative), Cape Town (legislative), and Bloemfontein (judicial). Pretoria is the correct answer for the administrative capital.

Question 6

A sum of money is invested for 2 years at 10% compound interest p.a. It would fetch Rs. 1,762 more if interest is calculated half yearly. Find the sum invested.

Accepted Answer

Calculate CI for annual and half-yearly compounding. The difference is 1762. Use the formula P[(1+R/200)^4 - (1+R/100)^2] = 1762 to find P. P = 3,20,000.

Question 7

In a rectangle, the length is twice the breadth and the perimeter of the rectangle is 48 cm. The area of the rectangle is:

Accepted Answer

Let breadth be 'b'. Length is '2b'. Perimeter 2(l+b) = 2(2b+b) = 6b = 48 cm. So, b = 8 cm, l = 16 cm. Area = l*b = 16*8 = 128 cm².

Question 8

India’s 1statomic power station was commissioned in:

Accepted Answer

India's first atomic power station, Tarapur Atomic Power Station, was commissioned in 1969. This is a direct factual recall question.

Question 9

What is the name of the skill development programme of the Government of India?

Accepted Answer

The correct name for the skill development programme of the Government of India is Pradhan Mantri Kaushal Vikas Yojana (PMKVY). It aims to provide skill training to Indian youth.

Question 10

The Communal Electorate system in India was first introduced by the ______

Accepted Answer

The Morley-Minto Reforms of 1909 introduced the communal electorate system in India, granting separate electorates for Muslims.

Question 11

Where are the headquarters of the OECD is located?

Accepted Answer

The Organisation for Economic Co-operation and Development (OECD) has its headquarters located in Paris, France. This is a direct factual recall question.

Question 12

What is the approximate total length of coastline of India including the coastline of Lakshadweep islands and Andaman & Nicobar Islands?

Accepted Answer

The total coastline of India, including its islands, is approximately 7517 km. This is a direct factual recall question.

Question 13

The "Indradhanush” framework, an Indian government initiative, is for:

Accepted Answer

The Indradhanush framework, launched in 2015, is a comprehensive plan by the Indian government to revamp and strengthen Public Sector Banks (PSBs). It focuses on seven key areas.

Question 14

Which session of the congress gave a call to the attainment of 'Swaraj'?

Accepted Answer

The Calcutta Session of the Indian National Congress in 1906, presided over by Dadabhai Naoroji, first officially declared 'Swaraj' as its goal.

Question 15

Which of the following human diseases is caused by bacteria?

Accepted Answer

Typhoid is a bacterial infection caused by Salmonella Typhi. The other options, Hepatitis A, Measles, and Polio, are all viral diseases.

Question 16

Which of the following is NOT classified under Kingdom Animalia?

Accepted Answer

Protozoa are single-celled eukaryotes, historically grouped as animals but now classified under Kingdom Protista. Metazoa, Choanozoa, and Pipiens (a genus of frog) are all part of Kingdom Animalia.

Question 17

Which is the highest literate state of India as per Census 2011?

Accepted Answer

As per Census 2011, Kerala has the highest literacy rate among all Indian states, making it the most literate state.

Question 18

Ifsin‌⁡θ=‌35andcos⁡θ=‌45, then the value of‌1‌+‌tan‌⁡θ‌1−cot‌⁡θ‌is:

Accepted Answer

First, calculate tanθ = sinθ/cosθ = (3/5)/(4/5) = 3/4 and cotθ = 1/tanθ = 4/3. Substitute these values into the expression and simplify to get the result.

Question 19

If P = 0.3 × 0.3 + 0.03 × 0.03 - 0.6 × 0.03 and Q = 0.54, then‌PQis equal to:

Accepted Answer

Recognize P as (a-b)^2 where a=0.3 and b=0.03. So P = (0.3 - 0.03)^2 = (0.27)^2 = 0.0729. Then, PQ = 0.0729 * 0.54 = 0.039366. The closest option is 0.135, which is incorrect. Let's recheck. P = (0.3 - 0.03)^2 = (0.27)^2 = 0.0729. The question asks for P/Q, not PQ. So P/Q = 0.0729 / 0.54 = 0.135. The question asks for PQ, not P/Q. Let's recheck the question. It asks for PQ. So P = 0.0729. Q = 0.54. PQ = 0.0729 * 0.54 = 0.039366. There seems to be a mismatch between the provided correct answer and the calculation for PQ. Assuming the question meant P/Q, then P/Q = 0.0729 / 0.54 = 0.135. Given the correct answer is 3 (0.135), the question likely intended P/Q.

Question 20

The focus of World Environment Day, 2018 was on _______

Accepted Answer

World Environment Day 2018 focused on 'Beat Plastic Pollution'. This theme aimed to encourage people to reduce single-use plastic.