RRB NTPC 2021-04-03-2021-2 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-04-03-2021-2 RRB Questions

1.
Find the arithmetic mean of
36, 53, 50, 43, 57, 50, 40, 35, 39 and 34.
A.
43.7
B.
43
C.
50
D.
52.4
😑 View Answer Rough Work
ANSWER :
A. 43.7
2.
The mean of 11 numbers is 44. If the mean of the first 6 numbers is 39 and that of the last 6 numbers is 48, then what is the 6th number?
A.
38
B.
36
C.
32
D.
34
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ANSWER :
A. 38
3.
What do the letters NPK on a fertilizer pack indicate?
A.
Nitrogen, Potassium, Phosphors
B.
Nitrogen, Phosphorus, Potassium
C.
Nitric acid, Phosphorus, Potassium
D.
Nitrogen, Phosphoric acid, Potassium
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ANSWER :
B. Nitrogen, Phosphorus, Potassium
4.
Select the option that is different from the rest.
A.
QK
B.
VE
C.
UF
D.
TG
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ANSWER :
A. QK
5.
The Air India logo consists of:
A.
a flying swan only
B.
a flying duck with the wheel of konark inside it
C.
a flying crane with the wheel of konark inside it
D.
a flying swan with the wheel of konark inside it
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ANSWER :
D. a flying swan with the wheel of konark inside it
6.
Which of the following is NOT a source of sea energy?
A.
Solar energy
B.
Ocean thermal energy
C.
Wave energy
D.
Tidal energy
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ANSWER :
A. Solar energy
7.
Deficiency of Vitamin C causes:
A.
goiter
B.
beriberi
C.
loss of vision
D.
scurvy
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ANSWER :
D. scurvy
8.
Which of the following sectors contribute the most to GDP in India?
A.
Tertiary sector
B.
Secondary sector
C.
Primary sector
D.
Unorganised sector
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ANSWER :
A. Tertiary sector
9.

For x > 0 find the value of \(\left(1+\frac{1}{x+1}\right)\left(1+\frac{1}{x+2}\right)\left(1+\frac{1}{x+3}\right)\left(1+\frac{1}{x+4}\right)\).

A.

\(\frac{x+1}{x+5}\)

B.

\(\left(1+\frac{1}{x+5}\right)\)

C.

\(\frac{1}{x+5}\)

D.

\(\frac{x+5}{x+1}\)

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ANSWER :

D. \(\frac{x+5}{x+1}\)

10.

If θ = 60°, then the value of \(\frac{2\cot^2\theta}{1-\cot^2\theta}\) = ?

A.

\(\sqrt{3}\)

B.

\(\frac{1}{\sqrt{3}}\)

C.

2

D.

1

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ANSWER :

D. 1