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1
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The energy is always conserved for a system which is 
1
isolated only 
2
non-isolated only 
3
both isolated and non-isolated 
4
none of above 
2
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Suppose, a ball of mass M is thrown upwards from a point A and it reaches up to the highest point B and returns back to point A, which one among the following is correct ? 
1
Kinetic Energy at A = Potential Energy at B 
2
Kinetic Energy at A = Potential Energy at A 
3
Kinetic Energy at B = Potential Energy at B
4
Kinetic Energy at B = Kinetic Energy at A 
3
NDA General Ability 13 April 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following statements is correct ?
1
A neutron is formed by combination of an electron and a proton. Therefore, it is neutral
2
The mass of an electron is about 1/2000 times that of a proton
3
An isotope of cobalt is used in the treatment of goiter
4
J. J. Thomson proposed that the nucleus of an atom contains only neutrons
4
NDA General Ability 13 April 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following particles in the nucleus of an atom was discovered by J. Chadwick?
1
Electron
2
Proton
3
Positron
4
Neutron
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