RRB NTPC 2020 PYQs

Question 1

Sunila had9‌14kg of flour to make bread with. If the recipe says that she needs1‌18kg to make one loaf of bread, how many loafs can she make? Estimate to the nearest whole number.

Accepted Answer

Convert mixed fractions to improper fractions: 37/4 and 9/8. Divide total flour (37/4) by flour per loaf (9/8) which is (37/4) * (8/9) = 74/9 = 8.22. Rounding to the nearest whole number gives 8.

Question 2

How many categories are there of Nobel Prize?

Accepted Answer

The Nobel Prize is awarded in six categories: Physics, Chemistry, Medicine, Literature, Peace, and Economic Sciences. Therefore, the correct answer is 6.

Question 3

In general, the most appropriate average value in measuring central tendency is:

Accepted Answer

The mean is generally considered the most appropriate average as it uses all data points and is suitable for statistical analysis, representing the dataset's balance point.

Question 4

Find the value of:√150−√54−√24

Accepted Answer

Simplify each surd: √150 = 5√6, √54 = 3√6, √24 = 2√6. Substitute these values into the expression: 5√6 - 3√6 - 2√6 = (5-3-2)√6 = 0√6 = 0.

Question 5

Which of the following countries is a member of SAARC?

Accepted Answer

SAARC (South Asian Association for Regional Cooperation) includes Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, and Sri Lanka. Afghanistan is the correct answer.

Question 6

Who is the author of the book 'Republic'?

Accepted Answer

Plato, the ancient Greek philosopher, is widely recognized as the author of 'The Republic', a foundational work in Western philosophy and political theory.

Question 7

When was India's first satellite, the Aryabhata spacecraft launched?

Accepted Answer

India's first satellite, Aryabhata, was launched on April 19, 1975, from Kapustin Yar by the Soviet Union.

Question 8

Which of the following shows a symbiotic relationship?

Accepted Answer

Lichen is a classic example of a symbiotic relationship, specifically mutualism, between a fungus and an alga or cyanobacterium, where both organisms benefit.

Question 9

Which Nation has hosted the Commonwealth Games five times?

Accepted Answer

Australia has hosted the Commonwealth Games five times, more than any other nation. This is a direct factual recall question.

Question 10

Choose the word-pair that is different from the other three.

Accepted Answer

All pairs except option 2 show synonyms. 'Negligent' means careless, while 'Attentive' means watchful, making them antonyms.

Question 11

Which of the following is an ancient Buddhist text?

Accepted Answer

Abhidharma kosha is a foundational Buddhist text, a systematic compilation of Abhidharma teachings. The other options are Hindu or classical Sanskrit literary works.

Question 12

How many wars were fought by the British with Mysore?

Accepted Answer

The British fought four Anglo-Mysore Wars. These wars were crucial in establishing British dominance in South India.

Question 13

Which of the following countries is NOT a member of BIMSTEC?

Accepted Answer

BIMSTEC includes Bangladesh, Bhutan, India, Myanmar, Nepal, Sri Lanka, and Thailand. Maldives is not a member of BIMSTEC.

Question 14

By which of the following Amendments of the Constitution, Fundamental Duties of the citizens were added to the Constitution of India?

Accepted Answer

The 42nd Constitutional Amendment Act of 1976 added Fundamental Duties to the Indian Constitution, based on the recommendations of the Swaran Singh Committee.

Question 15

With the abdication of the throne by the Japanese Emperor, Akihito, the new Imperial era in Japan is known as _______.

Accepted Answer

Upon Emperor Akihito's abdication in 2019, his son Naruhito ascended the Chrysanthemum Throne, marking the beginning of the Reiwa era.

Question 16

If interest is compounded annually, a sum of Rs 25,000 becomes Rs 36,000 after 2 years. The rate of interest is:

Accepted Answer

Use the compound interest formula A = P(1 + R/100)^T. Substitute given values: 36000 = 25000(1 + R/100)^2. Simplify to (6/5)^2 = (1 + R/100)^2, so 6/5 = 1 + R/100. Solving for R gives 20%.

Question 17

If '+' is replaced by '-', '×' is replaced by '+' and '-' by '×'. then28+(5×7)−‌96will be equal to:

Accepted Answer

By substituting the given mathematical operators into the expression and applying the BODMAS rule, we evaluate the equation to find the correct value of 10.

Question 18

When was the first session of Indian National Congress held?

Accepted Answer

The first session of the Indian National Congress was held in December 1885 in Bombay. It marked a significant event in India's freedom struggle.

Question 19

The value of‌√54‌×‌√125√24×√45is:

Accepted Answer

Simplify each square root: √54 = 3√6, √125 = 5√5, √24 = 2√6, √45 = 3√5. Substitute these into the expression: (3√6 × 5√5) / (2√6 × 3√5). Cancel common terms (√6 and √5) to get (3 × 5) / (2 × 3) = 15/6 = 2.5.

Question 20

Sita took an auto from her home in Andheri (A) to go to her college in Fatehpuri (F). Rather than continuing straight on the direct road to the college that had no turns, the auto driver took a diversion after 10 km and tumed right at Bandra (B) crossing, then at Colaba T- point (C) after 8 km turned left, again after covering 12 km turned left at Dalhousi Building (D) and soon after 8 km turned right at Elphinston point (E) and after covering 4 km reached Fatehpuri (F). Had the auto driver taken the direct route how much less distance would Sita have actually travelled between the starting point and the destination?

Accepted Answer

The auto driver's path forms a rectangle (8km x 12km) with an initial 10km and final 4km. Total distance covered is 10+8+12+8+4 = 42 km. The direct route is 10+12+4 = 26 km. The difference is 42 - 26 = 16 km.