RRB Group D 2022-29-9-2022-1 RRB Question Paper

RRB Group D 2022 Question Papers

RRB Group D 2022-29-9-2022-1 RRB Questions

31.
In an electric motor, the direction of currents flowing through the arms of the coil will be ______ to each other due to Fleming's left hand rule.
A.
Opposite
B.
parallel
C.
Perpendicular
D.
in the same direction
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ANSWER :
A. Opposite
32.
Eight persons are sitting around a circular table facing the centre. Z is an immediate neighbour of both U and V. Z is second to the left of X. S is an immediate neighbour of both U and T. U sits third to the left of X. W is an immediate neighbour of T. Y sits second to the right of V. Who sits third to the left of T?
A.
X
B.
Z
C.
W
D.
Y
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ANSWER :
A. X
33.
If 2 and -3 are the roots of a quadratic equation, then the quadratic equation is:
A.
x² + x + 6 = 0
B.
x² - x - 6 = 0
C.
x² + x - 6 = 0
D.
x² - x + 6 = 0
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ANSWER :
C. x² + x - 6 = 0
34.
Which of the following statements about HIV is false?
A.
Once HIV weakens your immune system, germs can attack your body and you fall sick.
B.
HIV prevents your immune system from protecting your body.
C.
HIV enters your red blood cells and attacks your immune system.
D.
HIV can be transmitted through sexual intercourse with an infected partner.
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ANSWER :
C. HIV enters your red blood cells and attacks your immune system.
35.
Which type of forest is the main source of resources like silver fir, juniper, pine and birch for shrubs, herbs and tribes living in mountainous areas?
A.
Tropical Deciduous Forest
B.
Mangrove Forest
C.
Mountain Forest
D.
Tropical Evergreen Forest
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ANSWER :
C. Mountain Forest
36.
A doublet is a combination of two lenses. One such doublet is made with a convex lens of focal length of 20 cm and a concave lens of focal length of 50 cm. The effective focal length and power of this doublet is ______ and ______, respectively.
A.
50 cm, 2D
B.
33.3 cm, 3D
C.
14.28 cm, 7D
D.
20 cm, 5D
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ANSWER :
B. 33.3 cm, 3D
37.
When a beam of fine white light passes through a prism, what phenomenon occurs?
A.
The ray will be reflected
B.
The ray will be refracted
C.
The ray will sparkle
D.
The ray will be dispersed
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ANSWER :
D. The ray will be dispersed
38.

Consider a circuit in which three resistors of 10 Ω, 20 Ω and 30 Ω are connected in parallel to each other to a cell of 220 V. The effective resistance and the current in the 20 Ω resistor are ______ and ______, respectively.

A.

\( \frac{30}{11} \) Ω, 22 A

B.

\( \frac{60}{11} \) Ω, 11 A

C.

\( \frac{60}{11} \) Ω, 22 A

D.

\( \frac{30}{11} \) Ω, 11 A

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ANSWER :

B. \( \frac{60}{11} \) Ω, 11 A

39.

The length of each side of a rhombus is 20 cm, and the length of one of its diagonals is 30 cm. Find the length (in cm) of its other diagonal.

A.

\(\sqrt{175}\)

B.

10\(\sqrt{7}\)

C.

\(\sqrt{7}\)

D.

6\(\sqrt{7}\)

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ANSWER :

B. 10\(\sqrt{7}\)

40.
Which of the following does NOT happen due to burning of fossil fuels?
A.
Formation of smog
B.
Formation of nitrogen and sulfur oxides
C.
Acid rain
D.
Decrease in ozone level in the upper atmosphere
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ANSWER :
D. Decrease in ozone level in the upper atmosphere