RRB NTPC 2021-19-01-2021-2 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-19-01-2021-2 RRB Questions

41.
Which of the following is used to detect cracks and flaws in metal blocks?
A.
Reverberation
B.
Ultrasound
C.
Echo
D.
Sound Navigation and Ranging (SONAR)
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ANSWER :
B. Ultrasound
42.
Which city from the Harappan Civilization was almost exclusively devoted to craft production including bead making, shell cutting, metal working, seal making and weight making?
A.
Harappa
B.
Mohenjo Daro
C.
Nageshwar
D.
Chanhudaro
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ANSWER :
D. Chanhudaro
43.
The SI unit of sound was named in honour of which physicist?
A.
JC Maxwell
B.
Werner Karl Heisenberg
C.
Heinrich Rudolf Hertz
D.
Albert Einstein
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ANSWER :
C. Heinrich Rudolf Hertz
44.
A can finish a piece of work in 25 days and B can finish it in 20 days. They work together for 5 days and then A leaves. In how many days will B finish the remaining work?
A.
15 days
B.
12 days
C.
11 days
D.
16 days
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ANSWER :
C. 11 days
45.
Which of the following is an audio file extension?
A.
WMA
B.
MOV
C.
WMV
D.
MP5
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ANSWER :
A. WMA
46.
A train 800 m long is travelling at a speed of 120 km/h. How much time will it take to cross a bridge 1200 m long?
A.
2 min
B.
3 min
C.
1 min
D.
4 min
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ANSWER :
C. 1 min
47.
Who among the following has not been India's Finance Minister?
A.
T T Krishnamachari
B.
Yashwant Sinha
C.
Arun Jaitley
D.
V K Krishna Menon
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ANSWER :
D. V K Krishna Menon
48.

Prakash remembers that Danish's birthday comes in the last week of February. Rajesh confirms that Danish's birthday comes after 27th February every year. What is Danish's probable date of birth?

A.

27th February

B.

28th February

C.

26th February

D.

29th February

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ANSWER :

B. 28th February

49.
A sells a radio to B at a gain of 10% and B sells it to C at a gain of 5%. If C pays ₹462 for it, then what did it cost A?
A.
₹400
B.
₹390
C.
₹410
D.
₹420
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ANSWER :
A. ₹400
50.
In a certain code language, 'MRNQSL' is written as 'SZXWAV'. What is the code for 'STVZBQ' in that code language?
A.
YBGGJA
B.
YBFEJA
C.
YBGGJE
D.
YBFFJA
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ANSWER :
D. YBFFJA