CDS Exam (II)- 2018 - General Knowledge Defence Question Paper

CDS Previous Year Question Papers Question Papers
CDS Exam (II)- 2018 - General Knowledge

CDS Exam (II)- 2018 - General Knowledge Defence Questions

21.
Which one of the following statements with regard to growth of coral reefs is not correct?
A.
Coral can grow abundantly in freshwater.
B.
It requires warm water between \( 23^{\circ}C \)–\( 25^{\circ}C \).
C.
It requires shallow saltwater, not deeper than 50 metres.
D.
It requires plenty of sunlight to aid photosynthesis.
ANSWER :
A. Coral can grow abundantly in freshwater.
22.
As per Census 2011, the concentration of Scheduled Caste population (going by percentage of Scheduled Caste population to total population of the State) is the highest in the State of
A.
Uttar Pradesh
B.
Himachal Pradesh
C.
Punjab
D.
West Bengal
ANSWER :
C. Punjab
23.
Which one of the following States has more than two major ports?
A.
Maharashtra
B.
West Bengal
C.
Odisha
D.
Tamil Nadu
ANSWER :
D. Tamil Nadu
24.
The equivalent weight of \( Ba(OH)_{2} \) is (given, atomic weight of Ba is 137.3)
A.
85.7
B.
137.3
C.
154.3
D.
171.3
ANSWER :
A. 85.7
25.
Which one of the following nitrogen oxides has the highest oxidation state of nitrogen?
A.
\( NO \)
B.
\( NO_{2} \)
C.
\( N_{2}O \)
D.
\( N_{2}O_{5} \)
ANSWER :
D. \( N_{2}O_{5} \)
26.
Which one of the following is not true for the form of carbon known as diamond?
A.
It is harder than graphite.
B.
It contains the same percentage of carbon as graphite.
C.
It is a better electric conductor than graphite.
D.
It has the same carbon to carbon distance in all directions.
ANSWER :
C. It is a better electric conductor than graphite.
27.
In which one of the following reactions, the maximum quantity of \( H_{2} \) gas is produced by the decomposition of 1 g of compound by \( H_{2}O/O_{2} \)?
A.
\( CH_{4} + H_{2}O \rightarrow CO + 3H_{2} \)
B.
\( CO + H_{2}O \rightarrow CO_{2} + H_{2} \)
C.
\( CH_{4} + \frac{1}{2}O_{2} \rightarrow CO + 2H_{2} \)
D.
\( C_{12}H_{24} + 6O_{2} \rightarrow 12CO + 12H_{2} \)
ANSWER :
A. \( CH_{4} + H_{2}O \rightarrow CO + 3H_{2} \)
28.
When a convex lens produces a real image of an object, the minimum distance between the object and image is equal to
A.
the focal length of the convex lens
B.
twice the focal length of the convex lens
C.
four times the focal length of the convex lens
D.
one half of the focal length of the convex lens
ANSWER :
C. four times the focal length of the convex lens
29.
The direction of magnetic field at any location on the earth's surface is commonly specified in terms of
A.
field declination
B.
field inclination
C.
both field declination and field inclination
D.
horizontal component of the field
ANSWER :
C. both field declination and field inclination
30.
A circuit has a fuse having a rating of 5 A. What is the maximum number of 100 W-220 V bulbs that can be safely connected in parallel in the circuit?
A.
20
B.
15
C.
11
D.
10
ANSWER :
C. 11