RRB NTPC 2021-03-03-2021-1 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-03-03-2021-1 RRB Questions

41.
A train passes two persons who are walking in the opposite direction of the train at the rates of 4 m/s and 10 m/s in 10 seconds and 8 seconds respectively. What is the speed of the train?
A.
15 m/s
B.
20 m/s
C.
40 m/s
D.
10 m/s
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ANSWER :
B. 20 m/s
42.
The length and breadth of a rectangle are in the ratio 2 : 1. The numerical values of the perimeter and the area of the rectangle are in the ratio 3 : 4. Find the length of the rectangle.
A.
16 units
B.
4 units
C.
6 units
D.
8 units
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ANSWER :
D. 8 units
43.

Solve the following: 4\( \frac{1}{3} \) × 2\( \frac{4}{5} \) ÷ 2\( \frac{1}{3} \)= ?

A.

6 \( \frac{1}{5} \)

B.

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

C.

6 \( \frac{6}{5} \)

D.

1 \( \frac{6}{5} \)

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ANSWER :

B. 5 \( \frac{1}{5} \)

44.
Worker A is thrice as efficient as worker B. They can together finish a task in 18 days. How many days will A alone take to finish the work?
A.
24 days
B.
42 days
C.
12 days
D.
48 days
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ANSWER :
A. 24 days
45.
A class consists of 60 students with the ratio of girls to boys as 5 : 7. If 5 boys leave the class, the ratio of boys to girls would become:
A.
6 : 5
B.
5 : 6
C.
5 : 7
D.
7 : 5
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ANSWER :
A. 6 : 5
46.
The length of a rectangle is 2 cm more than its breadth. If the perimeter of the rectangle is 20 cm, then its area is:
A.
20 cm²
B.
24 cm²
C.
4 cm²
D.
14 cm²
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ANSWER :
B. 24 cm²
47.
If the inradius of a triangle with perimeter 64 cm is 8 cm, then find the area of the triangle.
A.
120 cm²
B.
256 cm²
C.
265 cm²
D.
146 cm²
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ANSWER :
B. 256 cm²
48.
Who is known as the 'Missile Man of India'?
A.
K Sivan
B.
Dr. APJ Abdul Kalam
C.
Bhisham Sahni
D.
CV Raman
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ANSWER :
B. Dr. APJ Abdul Kalam
49.
The square root of 4096 is:
A.
66
B.
64
C.
63
D.
62
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ANSWER :
B. 64
50.
Read the given statements and conclusions carefully. Statements: I. No woman is a cow. II. Elif is a woman. Conclusions: (i) Elif is not a cow. (ii) Elif may or may not be a cow.
A.
Only conclusion (i) follows.
B.
Either conclusion (i) or (ii) follows.
C.
Both conclusions (i) and (ii) follow.
D.
Neither conclusions (i) nor (ii) follow.
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ANSWER :
A. Only conclusion (i) follows.