RRB Group D 2022-7-10-2022-3 RRB Question Paper

RRB Group D 2022 Question Papers

RRB Group D 2022-7-10-2022-3 RRB Questions

31.

The total energy consumed for 30 days by an air cooler rated 300 watt operating 12 hours per day is _______.

A.

108 joule

B.

108 KWh

C.

108 Wh

D.

108 joule-second

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ANSWER :

B. 108 KWh

32.

If u + v = −2 and u2 + v2 = 16 , then the value of (u−v)2 is:

A.

8

B.

14

C.

28

D.

16

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ANSWER :

C. 28

33.
Which of the following statements is correct regarding a substitution reaction?
A.
In a molecule, a reactive atom is replaced by a less reactive atom or element.
B.
A chemical reaction where a single compound is formed.
C.
Reactive atoms containing two or more atoms combine to form a compound.
D.
Two compounds react to form a single compound.
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ANSWER :
A. In a molecule, a reactive atom is replaced by a less reactive atom or element.
34.
The number of covalent bonds involved in the formation of a nitrogen molecule is:
A.
one
B.
four
C.
two
D.
three
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ANSWER :
D. three
35.
Which of the following statements is/are true regarding the center of curvature of a spherical mirror?
(I) A ray of light passing through the center of curvature of a spherical mirror retraces its path in opposite direction.
(II) An image formed at the center of curvature of a spherical mirror is of the same size as that of the object.
(III) An image formed at the center of curvature of a spherical mirror is real and inverted.
A.
(I), (II) and (III)
B.
Only (I)
C.
Only (I) and (III)
D.
Only (I) and (II)
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ANSWER :
A. (I), (II) and (III)
36.
Mendel’s law of independent assortment was based on parent pea plants differing in how many traits?
A.
Four
B.
One
C.
Three
D.
Two
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ANSWER :
D. Two
37.

The given bar graph shows the production (in million tonnes) of three different companies making hand sanitizers (Himalaya, Oriley, Boroplus) for 5 years. Study the graph and answer the question that follows.

What is the percentage of increase in the production of sanitizers of company Himalaya from 2018 to 2020?

A.

80%

B.

70%

C.

95%

D.

75%

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ANSWER :

D. 75%

38.
What is the reason that the lungs have alveoli?
A.
To give mechanical support to the lungs
B.
To provide pumping action for the lungs
C.
To increase the volume of the lungs
D.
To increase the surface area
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ANSWER :
D. To increase the surface area
39.

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?
V37E, P27H, J19L, ?

A.

C11P

B.

E11R

C.

D13Q

D.

E15R

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ANSWER :

C. D13Q

40.

Study the given line graph and answer the following question.
The given line graph depicts the number of girls in four classes (I, II, III and IV).

If the total number of boys in classes I, II and IV is 27 more than the total number of girls in the same classes, what is the total number of boys in classes I, II and IV?

A.

94

B.

85

C.

87

D.

97

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ANSWER :

D. 97