1
NDA General Ability 1st September 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language
What is the maximum number of electrons that can occupy the first shell of an atom?
1
2
2
4
3
8
4
16
2
NDA General Ability 1st September 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language
At which temperature does liquid water show maximum density?
1
299 K
2
277 K
3
285 K
4
373 K
3
NDA General Ability 1st September 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one among the following has valency of 3?
1
Carbon
2
Oxygen
3
Nitrogen 
4
Sodium
4
NDA General Ability 1st September 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one among the following is an example of oxidation reaction? 
1
Freezing of water
2
Dissolving sugar in water
3
Rusting of iron
4
Boiling of petrol
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