RRB Group D 2018-24-9-2018-3 RRB Question Paper

RRB Group D 2018 Question Papers

RRB Group D 2018-24-9-2018-3 RRB Questions

11.
There is a creator and a destroyer in a computer game. Their total number is 16. Some try to build a wall around the palace and others try to destroy it. Each builder alone can build a wall in 18 hours while any destroyer can destroy it in 15 hours. The wall is built in 2.5 hours if all the 16 people are activated before the wall is built. Find the number of destroyers out of these?
A.
4
B.
5
C.
3
D.
6
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ANSWER :
A. 4
12.
Which of the following has only magnitude and no direction?
A.
Momentum
B.
Displacement
C.
Work
D.
Force
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ANSWER :
C. Work
13.
Testosterone which is a male sex hormone is synthesized in _________.
A.
Scrotum
B.
Testicle
C.
Seminal Vesicle
D.
Prostate Gland
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ANSWER :
B. Testicle
14.
_________ started the system of Mansabdari to strengthen the army.
A.
Babur
B.
Aurangzeb
C.
Akbar
D.
Jahangir
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ANSWER :
C. Akbar
15.
_________ in plants helps in the absorption and uptake activity, from roots to leaves, in the transmission of water and minerals.
A.
Consideration
B.
Photosynthesis
C.
Respiration
D.
Transpiration
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ANSWER :
D. Transpiration
16.
(−8)[30 ÷ {7 − (−3)}] =?
A.
-24
B.
60
C.
24
D.
-60
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ANSWER :
A. -24
17.
The nature of ________ is electro-positive.
A.
Non-metals
B.
Metals
C.
Semi-metals
D.
Metalloid
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ANSWER :
B. Metals
18.
Kaveri bought a toy for Rs. 280 and sold it for Rs. 315. How much profit did she get?
A.
17.50%
B.
12.50%
C.
16%
D.
15.25%
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ANSWER :
19.
A train with a speed of 78 km/hr crosses a platform 450 m long in 27 sec. What is the length of the train?
A.
120 m
B.
135 m
C.
130 m
D.
125 m
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ANSWER :
B. 135 m
20.
The L.C.M. of 42, 84 and 48 is.
A.
210
B.
336
C.
168
D.
420
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ANSWER :
B. 336