RRB Group D 2022-19-9-2022-3 RRB Question Paper

RRB Group D 2022 Question Papers

RRB Group D 2022-19-9-2022-3 RRB Questions

1.
Which of the following is produced when baking powder is heated?
A.
Carbon dioxide and sodium carbonate is produced.
B.
Carbon dioxide and sodium salt of tartaric acid is produced.
C.
Carbon monoxide and sodium salt of tartaric acid is produced.
D.
Carbon monoxide and sodium carbonate is produced.
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ANSWER :
B. Carbon dioxide and sodium salt of tartaric acid is produced.
2.
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. EXAMPLE: 13 → Operations on 13 such as adding/deleting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
(7, 127, 6)
(8, 129, 5)
A.
(9, 168, 3)
B.
(10, 156, 4)
C.
(11, 144, 9)
D.
(13, 131, 5)
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ANSWER :
B. (10, 156, 4)
3.
The most essential difference between a DC and an AC generator is ______.
A.
Higher voltages are generated by AC generator only
B.
Higher voltages are generated by DC generator only
C.
DC generator has permanent magnet and AC has an electromagnet
D.
DC generator uses a commutator and AC generator uses slip rings
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ANSWER :
C. DC generator has permanent magnet and AC has an electromagnet
4.
Suppose in a circuit, several electric lamps are required to be used on a 220 V electric supply line, and they are rated as 20 W. If the maximum allowable current is 10 A, then the number of lamps that can be connected in parallel with each other across the two wires of the 220 V line is:
A.
220
B.
110
C.
55
D.
165
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ANSWER :
B. 110
5.
Sonu and Mary can complete a painting in 4 days and 6 days, respectively. They work on the same painting on alternate days starting with Mary. In how many days will they together complete the painting?
A.
4.5
B.
4.75
C.
5
D.
5.25
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ANSWER :
C. 5
6.

In the given letter-cluster pairs, the first letter-cluster is related to the second letter-cluster following a certain logic. Study the given pairs carefully, and from the given options, select the pair that follows the same logic.
ON : NPMO
IN : HJDO

A.

DO : ACMN

B.

AT : CDUV

C.

GO : ARED

D.

TO : SUNP

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ANSWER :

D. TO : SUNP

7.

If m=−9 and n=13, find the value of
25m2+40mn+16n2.

A.

64

B.

49

C.

81

D.

100

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ANSWER :

B. 49

8.
Mohan drives 6 km towards the south and takes a turn to the right at 90°. After driving a distance of 3 km, he turns to the right and drives further 3 km. Now, in which direction is he from the starting place? (All turns are 90 degree turns only.)
A.
South-East
B.
South
C.
South-West
D.
North
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ANSWER :
C. South-West
9.

Which of the options given below correctly describes the nature of the roots of the quadratic equation
x2 + 4\(\sqrt{3}\)x + 3 = 0

A.

irrational and equal

B.

irrational and unequal

C.

rational and equal

D.

rational and unequal

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ANSWER :

B. irrational and unequal

10.

The following graph shows the ratio of the imports and exports of an industry during the period from 2005 to 2011. Study the graph and answer the question that follows.

If the imports of the company in 2009 were 420 crore, then how much were the exports?

A.

400 crore

B.

300 crore

C.

250 crore

D.

350 crore

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ANSWER :

B. 300 crore