RRB NTPC 2021 PYQs

Question 1

Who wrote the famous Bangla novel ‘Pather Panchali?

Accepted Answer

Bibhutibhushan Bandopadhyay is the acclaimed author of the iconic Bangla novel 'Pather Panchali'. This is a direct factual recall question.

Question 2

In a school, 60% of the students passed in an examination. If the number of failed candidates is 240, then the number of candidates that have passed is:

Accepted Answer

If 60% passed, then 40% failed. Since 40% equals 240, 1% is 6. Therefore, 60% (passed students) is 60 * 6 = 360.

Question 3

Sushil Kumar won the Olympic medal for:

Accepted Answer

Sushil Kumar is a renowned Indian wrestler who has won multiple Olympic medals, including a bronze in 2008 and a silver in 2012.

Question 4

When is International Dance Day celebrated?

Accepted Answer

International Dance Day is celebrated annually on April 29th. This date commemorates the birth anniversary of Jean-Georges Noverre, a pioneer of modern ballet.

Question 5

In a firm the ratio of male and female members was 4 ∶ 5. The firm decided to increase the number of males by 80% and the number of females by 60%. What will be the new ratio of male members to female members in the firm?

Accepted Answer

Initial ratio is 4:5. Males increase by 80% (4 * 1.8 = 7.2). Females increase by 60% (5 * 1.6 = 8). New ratio is 7.2:8, which simplifies to 9:10.

Question 6

As of October 2020, who is the Vice President of India?

Accepted Answer

As of October 2020, M Venkaiah Naidu was the Vice President of India. He served from 2017 to 2022.

Question 7

Shree Guru Nanak Dev Ji was born in Rai Bhoi Ki Talwandi (present day Nankana Sahib) in:

Accepted Answer

Guru Nanak Dev Ji, the founder of Sikhism, was born in 1469 at Rai Bhoi Ki Talwandi, now known as Nankana Sahib, Pakistan.

Question 8

At what rate percent per annum will the simple interest in 15 years on a sum of money be‌34of the sum invested?

Accepted Answer

Let the principal be P. Simple Interest (SI) = (3/4)P. Time (T) = 15 years. Using SI = (P * R * T) / 100, substitute values: (3/4)P = (P * R * 15) / 100. Solve for R to get 5%.

Question 9

If ΔABC and ΔPQR are similar and‌BCQR=‌13, find‌ar(∆‌PQR)ar(∆‌BCA)

Accepted Answer

The ratio of areas of similar triangles is the square of the ratio of their corresponding sides. Given BC/QR = 1/3, so QR/BC = 3/1. Thus, ar(PQR)/ar(BCA) = (QR/BC)^2 = (3/1)^2 = 9.

Question 10

Which of the following was adopted by Lord Dalhousie to annex Indian states?

Accepted Answer

Lord Dalhousie implemented the Doctrine of Lapse to annex Indian states where rulers died without a natural heir, leading to British control.

Question 11

The average weight of an apple in a sample of 10 apples was calculated as 104 g. Later on, it was found that the weighing had shown the weight of each apple 20 g less. The correct average weight of an apple in that sample is:

Accepted Answer

Each apple's weight was 20g less than actual. So, the correct weight for each apple is 104g + 20g = 124g. The average remains the same as each apple's weight is corrected by the same amount.

Question 12

When was INSAT 1B commissioned?

Accepted Answer

INSAT-1B was a multi-purpose satellite launched by India. It was successfully commissioned in the year 1983, marking a significant milestone in India's space communication.

Question 13

By selling a car for Rs. 1,20,000, David makes a profit of 20%. What will be the selling price of the car if he sells it at 30% profit?

Accepted Answer

First, find the cost price (CP) using the 20% profit. CP = 120000 / 1.20 = Rs. 1,00,000. Then, calculate the selling price for 30% profit: 100000 * 1.30 = Rs. 1,30,000.

Question 14

Which of these is NOT a part of capital receipt?

Accepted Answer

Capital receipts either create a liability or reduce financial assets. Tax is a revenue receipt, not a capital receipt, as it neither creates liability nor reduces assets.

Question 15

A is 5 times as good as workman as B and therefore is able to complete a job in 60 days less than B. In how many days will they finish it working together?

Accepted Answer

Let B take 'x' days. A takes 'x/5' days. Given x - x/5 = 60, so 4x/5 = 60, x = 75 days. A takes 15 days. Together, 1/15 + 1/75 = 6/75 = 2/25. So, they take 25/2 = 12.5 days.

Question 16

As of October 2020, who is the captain of the Indian Men's Hockey Team?

Accepted Answer

As of October 2020, Manpreet Singh was the captain of the Indian Men's Hockey Team. This is a direct factual recall question.

Question 17

Who invented the modern mercury thermometer with a standardised scale?

Accepted Answer

Daniel Gabriel Fahrenheit invented the mercury thermometer in 1714 and developed the Fahrenheit scale, which became widely adopted for temperature measurement.

Question 18

Find the mean of the following data:x :19212325272931f :13151618161513

Accepted Answer

Calculate Σfx and Σf. The mean is Σfx / Σf. Here, Σfx = 3250 and Σf = 130. So, mean = 3250 / 130 = 25.

Question 19

Who formulated the 'Peoples Plan' (an economic plan) in India?

Accepted Answer

M.N. Roy formulated the 'Peoples Plan' in 1945, advocating for a decentralized economic structure. This plan focused on agricultural development and small-scale industries.

Question 20

Who among the following won a gold medal for India in Boxing in the 2018 Commonwealth Games?

Accepted Answer

Vikas Krishan Yadav won the gold medal in the men's 75 kg boxing category at the 2018 Commonwealth Games held in Gold Coast, Australia.