RRB NTPC 2021-05-04-2021-1 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-05-04-2021-1 RRB Questions

21.
Following the order of operations, the value of 81 − [20 + 7 × (30 − 3 × 9)] is:
A.
40
B.
20
C.
30
D.
0
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ANSWER :
A. 40
22.
The difference between the compound and the simple interests on a certain sum of money for two years, at 5% per annum, is ₹1. The sum is:
A.
₹450
B.
₹550
C.
₹400
D.
₹500
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ANSWER :
C. ₹400
23.

A and B both working together can finish a task in 10 days. B and C both working together can finish the same task in 15 days. A and C both working together can finish the task in 20 days. In how many days can A, B and C working together finish this task?

A.

9 \( \frac{3}{13} \) days

B.

9 \( \frac{4}{13} \)  days

C.

9 \( \frac{1}{13} \)  days

D.

9 \( \frac{2}{13} \)  days

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ANSWER :

A. 9 \( \frac{3}{13} \)  days

24.
Which of the following was concerned with center-state relations?
A.
Malimath Committee
B.
Srikrishna Commission
C.
Thakkar Commission
D.
Sarkaria Commission
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ANSWER :
D. Sarkaria Commission
25.
Four words have been given, out of which three are alike in some manner and one is different. Select the odd one.
A.
Action
B.
Romance
C.
Movie
D.
Comedy
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ANSWER :
C. Movie
26.
A book is purchased for ₹1,000 and then sold for ₹1,200. Find the gain percentage.
A.
25%
B.
20%
C.
15%
D.
10%
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ANSWER :
B. 20%
27.
Name the river on which the Indira Sagar Dam is built.
A.
Kaveri
B.
Ganges
C.
Yamuna
D.
Narmada
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ANSWER :
D. Narmada
28.
Select the option that is related to the third term in the same way as the second term is related to the first term. Horse : Stable :: Rabbit : ?
A.
Nest
B.
Palace
C.
Burrow
D.
Den
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ANSWER :
C. Burrow
29.
'The Origin of Species' was written by:
A.
Aristotle
B.
Confucius
C.
Plato
D.
Charles Darwin
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ANSWER :
D. Charles Darwin
30.
What is the full form of DOS?
A.
Device Outsourcing System
B.
Device Operating System
C.
Different Operating System
D.
Disk Operating System
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ANSWER :
D. Disk Operating System