RRB NTPC 2021-22-02-2021-1 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-22-02-2021-1 RRB Questions

11.
If the first term of a geometric progression is 2 and the common ratio is 3, then what will be the fifth term of the geometric progression?
A.
243
B.
324
C.
81
D.
162
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ANSWER :
D. 162
12.
Two numbers are in the ratio 9 : 5. If 9 is added to the greater number and 5 is subtracted from the smaller number, the greater number becomes thrice the smaller one. Find the numbers.
A.
36, 10
B.
72, 40
C.
18, 10
D.
36, 20
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ANSWER :
D. 36, 20
13.
In a class of 40 students the number of girls is three fifths of the number of boys. Then find the number of boys in the class.
A.
18
B.
25
C.
14
D.
15
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ANSWER :
B. 25
14.
If 24 men can complete a piece of work in 15 days working 8 h per day, then how many men will be required to complete the same work in 10 days working 6 h per day?
A.
32
B.
30
C.
48
D.
60
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ANSWER :
C. 48
15.
What is the full form of BARC?
A.
Bhabha Aromatic Research Center
B.
Bhabha Atomic Rehabilitation Center
C.
Bhabha Aerospace Research Center
D.
Bhabha Atomic Research Center
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ANSWER :
D. Bhabha Atomic Research Center
16.
The perimeter of the floor of a room is 18 m. What is the area of the walls of the room, if the height of the room is 3 m?
A.
108 m²
B.
21 m²
C.
54 m²
D.
42 m²
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ANSWER :
C. 54 m²
17.
_____ has three active forms: retinal, retinol and retinoic acid.
A.
Vitamin B
B.
Vitamin A
C.
Vitamin D
D.
Vitamin C
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ANSWER :
B. Vitamin A
18.

The _____ Five-Year Plan of India completed its term in March 2017.

A.

10th

B.

12th

C.

13th

D.

11th

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ANSWER :

B. 12th

19.
The equation whose roots are -2 and 3 is:
A.
x² - x + 6 = 0
B.
x² - x - 6 = 0
C.
x² - 5x + 6 = 0
D.
x² + 3x - 6 = 0
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ANSWER :
B. x² - x - 6 = 0
20.

Solve the following.
1 + \(\frac{1+\cos\theta}{\sin\theta}-\frac{\sin^2\theta}{1+\cos\theta}-\frac{\sin\theta}{1-\cos\theta}\)= ?

A.

cos θ

B.

- cos θ

C.

sin θ

D.

- sin θ

😑 View Answer Rough Work
ANSWER :

A. cos θ