RRB Group D 2022-22-9-2022-2 RRB Question Paper

RRB Group D 2022 Question Papers

RRB Group D 2022-22-9-2022-2 RRB Questions

41.
Bleaching powder is represented as:
A.
CaCl₂
B.
CaOCl₂
C.
CaCO₃
D.
Ca(OH)₂
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ANSWER :
B. CaOCl₂
42.
When a ray is incident parallel to the principal axis of a convex lens, then the refracted ray will pass through:
A.
Principal axis
B.
Centre of curvature
C.
Optical centre
D.
Principal focus
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ANSWER :
D. Principal focus
43.
What is the molecular formula of the second member of the alkene series?
A.
C₃H₆
B.
C₆H₁₂
C.
C₄H₈
D.
C₂H₄
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ANSWER :
A. C₃H₆
44.
The ratio of marks obtained by A and B is 3 : 4 and those obtained by B and C is 2 : 3. What is the ratio of marks obtained by A and C?
A.
2 : 1
B.
1 : 1
C.
3 : 2
D.
4 : 3
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ANSWER :
C. 3 : 2
45.
A light ray travels from air into an optical fibre with an index of refraction of 1.45. If the angle of incidence on the end of the fibre is 32°, the angle of refraction inside the fibre is:
A.
20.99°
B.
22.69°
C.
14.99°
D.
25.69°
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ANSWER :
C. 14.99°
46.

One-third of a certain journey is covered at a speed of 25 km/h, one-fourth of the journey is covered at a speed of 30 km/h and the rest of the journey is covered at 50 km/h. The average speed (in km/h) of the whole journey is:

A.

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

B.

33

C.

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

D.

32

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ANSWER :

C. 33\( \frac{1}{3} \)

47.
Study the given letter, number, symbol series and answer the question that follows.
(Left) T 2 L % 4 M 2 * B N @ 6 K # B D E $ 3 P (Right)
How many such numbers are there that are immediately preceded by a symbol and also immediately followed by a letter?
A.
3
B.
4
C.
2
D.
1
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ANSWER :
A. 3
48.
Which of the following festivals is NOT celebrated in January every year?
A.
Lohri
B.
Onam
C.
Bhogali Bihu
D.
Pongal
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ANSWER :
B. Onam
49.
Amongst six people, D, E, F, G, H, and I, each has a different age. They are standing in a line according to their age in an increasing order. F is older than E but younger than D. D is younger than I. E is older than G. G is older than H. Who comes in the 4th position in increasing order of age?
A.
F
B.
H
C.
I
D.
E
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ANSWER :
A. F
50.

Simplify:
\(\left(\frac{1}{512}\right)^{-\frac{2}{3}}\div\left(\frac{1}{64}\right)^{-\frac{4}{3}}\)

A.

\(\frac{2}{3}\)

B.

\(\frac{3}{4}\)

C.

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

D.

\(\frac{1}{6}\)

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ANSWER :

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