RRB Group D 2022-17-9-2022-3 RRB Question Paper

RRB Group D 2022 Question Papers

RRB Group D 2022-17-9-2022-3 RRB Questions

21.
Select the correct balanced chemical equation for the given reaction.
Magnesium(s) + Oxygen(g) โ†’ Magnesium oxide(s)
A.
2Mg(s) + Oโ‚‚(g) โ†’ 2MgO(s)
B.
2Mg(s) + Oโ‚‚(g) โ†’ 2MgOโ‚‚(s)
C.
Mg(s) + Oโ‚‚(g) โ†’ 2MgO(s)
D.
Mg(s) + Oโ‚‚(g) โ†’ MgOโ‚‚(s)
๐Ÿ˜‘ View Answer Rough Work
ANSWER :
A. 2Mg(s) + Oโ‚‚(g) โ†’ 2MgO(s)
22.
What is the difference between the molecular masses of two successive members of the homologous series?
A.
14 u
B.
6 u
C.
8 u
D.
12 u
๐Ÿ˜‘ View Answer Rough Work
ANSWER :
D. 12 u
23.
Which of the following is used to detect the presence of starch in food?
A.
Benedictโ€™s solution
B.
Litmus solution
C.
Phenolphthalein
D.
Iodine solution
๐Ÿ˜‘ View Answer Rough Work
ANSWER :
B. Litmus solution
24.
The population of a town in 1980 was 2,25,000. If its population increased in two successive decades by 10% in each decade, the population of the town in 2000 was:
A.
2,72,250
B.
2,72,350
C.
2,72,150
D.
2,72,450
๐Ÿ˜‘ View Answer Rough Work
ANSWER :
A. 2,72,250
25.
Which of the following is used to detect the presence of starch in food?
A.
Benedictโ€™s solution
B.
Litmus solution
C.
Phenolphthalein
D.
Iodine solution
๐Ÿ˜‘ View Answer Rough Work
ANSWER :
D. Iodine solution
26.
The population of a town in 1980 was 2,25,000. If its population increased in two successive decades by 10% in each decade, the population of the town in 2000 was:
A.
2,72,250
B.
2,72,350
C.
2,72,150
D.
2,72,450
๐Ÿ˜‘ View Answer Rough Work
ANSWER :
A. 2,72,250
27.
Six students P, Q, R, S, T and U are standing in a straight row such that all of them are facing towards north, but not necessarily in the same order. Q stands second from one of the ends and immediately to the right of P. Only two persons stand between P and R. R stands second to the left of T. The number of persons standing to the left of T is the same as to the right of T. T stands at the extreme right end of the row and to the immediate right of U. Q stands third to the left of U and stands to the immediate left of S. How many persons stand between Q and U?
A.
Two
B.
Four
C.
Three
D.
One
๐Ÿ˜‘ View Answer Rough Work
ANSWER :
A. Two
28.
Ram bought a bulb rated as 50 W and 220 V. When it is connected to a 220 V supply, its resistance will be:
A.
1068 ฮฉ
B.
1098 ฮฉ
C.
868 ฮฉ
D.
968 ฮฉ
๐Ÿ˜‘ View Answer Rough Work
ANSWER :
D. 968 ฮฉ
29.
Warts are caused by:
A.
Virus
B.
Algae
C.
Fungus
D.
Bacterium
๐Ÿ˜‘ View Answer Rough Work
ANSWER :
A. Virus
30.
The roots of the quadratic equation
are :
A.
โ€“2, 5
B.
5, 2
C.
2, โ€“5
D.
-5 ,-2
๐Ÿ˜‘ View Answer Rough Work
ANSWER :
B. 5, 2