RRB NTPC 2021-10-02-2021-1 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-10-02-2021-1 RRB Questions

31.
The HCF of any two even perfect squares will be at least
A.
2
B.
1
C.
6
D.
4
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ANSWER :
D. 4
32.
Who is the author of the Panchatantra collection of fables?
A.
Skandagupta
B.
Vishnu Gupta
C.
Vishnu Sharma
D.
Ved Shastri
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ANSWER :
C. Vishnu Sharma
33.
Which of the following organization's headquarters is NOT correctly matched?
A.
WHO – Geneva, Switzerland
B.
Amnesty International – New York, USA
C.
OPEC – Vienna, Austria
D.
IMF – Washington DC, USA
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ANSWER :
B. Amnesty International – New York, USA
34.

To a number, (\( \frac{1}{3} \) – \( \frac{1}{4} \)) is added. From the sum so obtained \( \frac{1}{3} \) of \( \frac{1}{4} \) is subtracted and the remainder is \( \frac{1}{3} \) + \( \frac{1}{4} \). Find the number.

A.

\( \frac{1}{12} \)

B.

\( \frac{2}{3} \)

C.

\( \frac{7}{12} \)

D.

\( \frac{4}{9} \)

😑 View Answer Rough Work
ANSWER :

C. \( \frac{7}{12} \)

35.
Four options have been given, out of which three are alike in some manner and one is different. Select the odd one.
A.
A pair of sweaters
B.
A pair of socks
C.
A pair of shoes
D.
A pair of gloves
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ANSWER :
A. A pair of sweaters
36.
Which of the following is NOT a river of Himalayan origin?
A.
Mahanadi
B.
Jhelum
C.
Ganga
D.
Yamuna
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ANSWER :
A. Mahanadi
37.

Which of the following statements is correct?

A.

DDT is a bio-control agent.

B.

Oxygen and ozone are the two main components of acid rain.

C.

The main cause of ozone depletion and the ozone hole is chlorofluorocarbons (CFCs).

D.

CO2 is not responsible for the green-house effect.

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ANSWER :

C. The main cause of ozone depletion and the ozone hole is chlorofluorocarbons (CFCs).

38.
A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 s, B completes it in 308 s and C completes it in 198 s, all starting from the same point. After what time will they meet again at the starting point?
A.
46 s
B.
46 min 12 s
C.
46 min
D.
45 min 11 s
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ANSWER :
B. 46 min 12 s
39.
Select the term that can replace the question mark (?) in the following equation.
(2a³– 3)(5a³ – 2) = 10 a⁶+ ? +6
A.
19
B.
19a³
C.
19a²
D.
−19a³
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ANSWER :
D. −19a³
40.

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

A.

45

B.

100

C.

65

D.

40

😑 View Answer Rough Work
ANSWER :

D. 40