1
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Airbags work on the principle of a chemical reaction triggered by the impact producing a gaseous product that causes a sudden volume change. Which one among the following chemical conversions is responsible for this?
A
Sodium azide into nitrogen gas
B
Solid carbon dioxide into gaseous carbon dioxide
C
Carbon dioxide into carbon monoxide
D
Sudden conversion of gaseous carbon dioxide into carbon monoxide
2
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following astronomers proved that the Earth and other planets revolve around the Sun?
A
Copernicus
B
Kepler
C
Galileo
D
Newton
3
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Sand falls vertically on a conveyor belt at a work rate of 0⋅1 kg/s. In order to keep the belt moving at a uniform speed of 2 m/s, the force required to be applied on the belt is :
A
0 N
B
0⋅2 N
C
1⋅0 N
D
2⋅0 N
4
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The power required to lift a mass of 8⋅0 kg up a vertical distance of 4 m in 2 s is (taking acceleration due to gravity as 10 m/s2):
A
80 W
B
160 W
C
320 W
D
640 W
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