RRB Group D 2018-3-10-2018-2 RRB Question Paper

RRB Group D 2018 Question Papers

RRB Group D 2018-3-10-2018-2 RRB Questions

21.
If G is the G.M. (Geometric Mean) of the product of r sets of observations with geometric means G1, G2, G3,…..Gr respectively, then find the value of G?
A.
log G1+ log G2+…..+log Gr
B.
G1⋅G2⋅…⋅Gr
C.
G1​+G2​+⋯+G
D.
logG1​,logG2​,…,logGr​
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ANSWER :
A. log G1+ log G2+…..+log Gr
22.
The given symbol represents________ Element ?
A.
Gold
B.
Hydrogen
C.
Mercury
D.
Carbon
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ANSWER :
B. Hydrogen
23.
Name the author of the book ‘One Indian Girl’
A.
Chetan Bhagat
B.
Ashwin Sanghi
C.
Brad Stone
D.
Mark Tully
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ANSWER :
A. Chetan Bhagat
24.
The recipients of the Whitley Awards, also called the Green Oscar Awards, are:
A.
S Bhoopaty and Parul Sarkar
B.
P Sanjeevani and Arunima Agarwal
C.
Sanjay Gubbi and Purnima Burman
D.
Manik Rao and Naresh Mehta
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ANSWER :
C. Sanjay Gubbi and Purnima Burman
25.
In the Modern Periodic Table, which group has a completely filled valence shell and chemically inactive elements?
A.
16
B.
18
C.
15
D.
17
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ANSWER :
B. 18
26.
The speed of a boat in still water is 12 km/h. If the boat covers a distance of 38 km upstream in 4 hours, then the speed of the stream (in km/h) is:
A.
6.5
B.
3.17
C.
2.5
D.
3
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ANSWER :
C. 2.5
27.
When light travels from a rarer medium to a denser medium, it _____.
A.
speed remains the same
B.
speeds down then up
C.
speeds down
D.
speeds up
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ANSWER :
C. speeds down
28.
Which of the following sports is Gurmeet Singh associated with?
A.
Race walk
B.
Kabaddi
C.
Shooting
D.
Wrestling
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ANSWER :
A. Race walk
29.
Solve the following equation to find x:
(x−2)2−36=0 ; x ∈ N
A.
4
B.
-4
C.
-8
D.
8
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ANSWER :
D. 8
30.
What type of tissue are our bones?
A.
Parenchyma
B.
Permanent tissue
C.
Epidermic
D.
Connective
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ANSWER :
D. Connective