RRB NTPC 2021-16-02-2021-1 RRB Question Paper

RRB NTPC 2021 - Graduate Level and Undergraduate Level Question Papers

RRB NTPC 2021-16-02-2021-1 RRB Questions

21.
Four words have been given, out of which three are alike in some manner and one is different. Select the odd one.
A.
Boil
B.
Bake
C.
Fry
D.
Chop
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ANSWER :
D. Chop
22.
Four words have been given, out of which three are alike in some manner and one is different. Select the odd one.
A.
Nose
B.
Tongue
C.
Stomach
D.
Ears
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ANSWER :
C. Stomach
23.

Solve the following.
\(\frac{4+3\times3-2}{4-3\times(3-2)}\) = ?

A.

12

B.

2

C.

11

D.

10

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ANSWER :

C. 11

24.
The mean and median of 7 observations are 10 and 9, respectively. If 1 is subtracted from each observation, then the new mean and the new median will respectively be:
A.
7 and 6
B.
8 and 9
C.
9 and 8
D.
4 and 3
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ANSWER :
C. 9 and 8
25.
Since 2008, the United Nations is running a program REDD to create awareness for the importance of carbon stored in the forests, reduction of carbon emissions and investment in low carbon development. What does REDD stand for?
A.
Recycling Energy from Deforestation and Forest Degradation
B.
Reducing Emissions from Deforestation and Forest Degradation
C.
Reducing Emissions from Disintegration and Forest Degradation
D.
Renewable Energy from Disintegration and Forest Degradation
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ANSWER :
B. Reducing Emissions from Deforestation and Forest Degradation
26.
Which polymer is used for the manufacturing of water pipes?
A.
Polystyrene
B.
Bakelite
C.
Glyptal
D.
PVC
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ANSWER :
D. PVC
27.
If (x + y) : (x - y) = 7 : 3, then find (x² + y²) : (x² - y²).
A.
21 : 29
B.
20 : 29
C.
29 : 21
D.
10 : 4
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ANSWER :
C. 29 : 21
28.
In 1939, which Viceroy of India announced that India had entered the war along with Britain?
A.
Lord Wavell
B.
Lord Mountbatten
C.
Lord Linlithgow
D.
Lord Willingdon
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ANSWER :
C. Lord Linlithgow
29.

The value of sin1° sin2° sin3°…sin180°…sin196° is:

A.

\( \frac{1}{4} \)

B.

\( \frac{1}{2} \)

C.

0

D.

\( \frac{1}{3} \)

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ANSWER :

C. 0

30.

What is the common name of the compound NaHCO3?

A.

Washing soda

B.

Bleaching powder

C.

Caustic soda

D.

Baking soda

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ANSWER :

D. Baking soda