1
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The quantity of heat needed to change unit mass of a substance from liquid to vapour without changing the temperature, is called 
1
specific heat  
2
specific latent heat 
3
thermal capacity 
4
heat energy 
2
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The temperature at which “vapour pressure of the liquid in an open vessel becomes equal to the atmospheric pressure” is called 
1
Melting point  
2
Boiling point 
3
Liquid point 
4
None of the above 
3
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following statements about surface tension is correct ? 
1
It increases when temperature ‘Increases 
2
It decreases when temperature increases 
3
It will remain same with increase or decrease of temperature 
4
It will always decrease with increase or decrease of temperature 
4
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
A body sinks in water when 
1
density of water is greater than density of body 
2
density of water is less than density of body 
3
density of water is equal to density of body 
4
the body is heavy