1
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Mirage is an illustration of
A
only dispersion of light.
B
only reflection of light.
C
only total internal reflection of light.
D
both refraction and total internal reflection of light.
2
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Common salt (NaCl) is not used as a raw material for preparation of which one of the following compounds?
A
Bleaching powder
B
Baking soda
C
Plaster of Paris
D
Washing soda
3
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Keppel Island is completely bleached mainly due to the expansion of
A
Starfish
B
Blue whale
C
Octopus
D
Sea horse
4
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language

Consider the following statements about Light year:

1. Light year is a unit for measurement of very large distances.

2. Light year is a unit for measurement of very large time intervals.

3. Light year is a unit for measurement of intensity of light.

Which of the statements given above is/are correct?

A
1, 2 and 3
B
2 and 3 only
C
1 and 2 only
D
1 only
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