RRB Group D 2018-4-10-2018-2 RRB Question Paper

RRB Group D 2018 Question Papers

RRB Group D 2018-4-10-2018-2 RRB Questions

31.
The speed of sound waves is 700 m/s. How long will the sound waves take to travel 7 km?
A.
5 s
B.
100 s
C.
50 s
D.
10 s
😑 View Answer Rough Work
ANSWER :
D. 10 s
32.
In a class of 10 students, the average age was 16 years. When two students left the class, the average age of the remaining students became 16.25 years. What is the total age of the students left?
A.
28 years
B.
32 years
C.
30 years
D.
34 years
😑 View Answer Rough Work
ANSWER :
C. 30 years
33.


choose the correct picture that replaces the symbol (?) above from the options given below

A.

B

B.

A

C.

D

D.

C

😑 View Answer Rough Work
ANSWER :

D. C

34.
Identify the Co-Prime pair from the given options.
A.
(16, 25)
B.
(36, 39)
C.
(42, 49)
D.
(12, 24)
😑 View Answer Rough Work
ANSWER :
A. (16, 25)
35.
You are given a question and two statements. Identify which of the statements is/are necessary/sufficient to answer the question.
Question:
X is Y’s brother; Z is mother of Y, how is Y related to X?
Statements:
Z has only 1 son and 1 daughter
X is only son of V who has 2 children
A.
Both 1 and 2 together are sufficient
B.
2 alone is sufficient while 1 alone is not sufficient
C.
1 alone is sufficient while 2 alone is not sufficient
D.
Either 1 or 2 alone is sufficient
😑 View Answer Rough Work
ANSWER :
D. Either 1 or 2 alone is sufficient
36.

Find the Odd man out :

A.

B

B.

D

C.

C

D.

A

😑 View Answer Rough Work
ANSWER :

D. A

37.

Find the rate of discount when the marked price is rs 1,880 and selling price is rs 1,598.

A.

13%

B.

12%

C.

20%

D.

15%

😑 View Answer Rough Work
ANSWER :

D. 15%

38.

Pipes A and B can fill a water tank in 30 and 45 minutes respectively while pipe C can take out all the water in 60 minutes. If the three pipes are opened simultaneously, how long will it take to fill the empty tank?

A.

(25 +\( \frac{5}{7} \)) min

B.

60 min

C.

(34 + \( \frac{1}{2} \)) min

D.

(18 + \( \frac{5}{7} \)) min

😑 View Answer Rough Work
ANSWER :

A. (25 +\( \frac{5}{7} \)) min

39.

A bullet, of mass 20 g, is horizontally fired with a velocity 150 m/s from a pistol of mass 2.5 kg. What is the recoil velocity of the pistol?

A.

–1.25 m/s-1

B.

–1.5 m/s-1

C.

–1.2 m/s-1

D.

–2.0 m/s-1

😑 View Answer Rough Work
ANSWER :

C. –1.2 m/s-1

40.
Coulomb is the SI unit of:
A.
Resistance
B.
Electric charge
C.
Electric current
D.
Potential difference
😑 View Answer Rough Work
ANSWER :
B. Electric charge