RRB Group D 2022-26-9-2022-2 RRB Question Paper

RRB Group D 2022 Question Papers

RRB Group D 2022-26-9-2022-2 RRB Questions

11.
Select the number from among the given options that can replace the question mark (?) in the following series:
5, 6, 14, 41, ?
A.
95
B.
169
C.
105
D.
188
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ANSWER :
C. 105
12.
Newlands’ Law of Octaves was applicable only up to element __________.
A.
Ca
B.
Mg
C.
Na
D.
K
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ANSWER :
A. Ca
13.
The radius of curvature of a spherical mirror is 40 cm. Its focal length is _______ cm.
A.
30
B.
20
C.
40
D.
10
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ANSWER :
B. 20
14.
The sum of the interior angles of a quadrilateral is equal to:
A.
270°
B.
180°
C.
360°
D.
360°
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ANSWER :
C. 360°
15.
Every germ cell will take one chromosome from each pair and these may be either maternal or paternal origin. When two germ cells combine, they will restore the normal number of chromosomes in the progeny, ensuring the stability of the DNA of the species. Such mechanism of inheritance is explained in:
A.
the results of the Mendel’s experiments
B.
speciation of organisms
C.
mutation in species
D.
variation in chromosomal number
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ANSWER :
A. the results of the Mendel’s experiments
16.
Which of the following gas is evolved when limestone undergoes thermal decomposition?
A.
Oxygen
B.
Carbon dioxide
C.
Hydrogen
D.
Carbon monoxide
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ANSWER :
B. Carbon dioxide
17.
If the cost price of an article is Rs 800 and if a 15% loss is incurred on selling the article, find the selling price.
A.
Rs 760
B.
Rs 780
C.
Rs 860
D.
Rs 680
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ANSWER :
D. Rs 680
18.

A sells an article to B at a gain of 6%. B sells it to C at a loss of 15% and C sells it to D at a gain of 20%. If the difference between the profits earned by C and A is Rs 48, then the loss (Rs ) incurred by B is:

A.

1,040

B.

1,160

C.

1,200

D.

1,150

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ANSWER :

B. 1,160

19.
9(x), x + 6, 7(x) − 3 and y are in proportion when x = 3. Find the value of y.
A.
54
B.
6
C.
45
D.
63
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ANSWER :
B. 6
20.

The power input to the circuit when charge of Q coulomb is flowing for t seconds for a potential difference of V volt is:

A.

P = \(\frac{Vt}{Q}\)

B.

P = VQt

C.

P = \(\frac{VQ}{t}\)

D.

P = \(\frac{Qt}{V}\)

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ANSWER :

C. P = \(\frac{VQ}{t}\)