1
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
2
NDA General Ability 1st September 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one among the following fertilizers is a source of nitrogen? 
1
Superphosphate
2
Potassium sulfate
3
Bone meal
4
Urea
3
NDA General Ability 1st September 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language
For Aluminium (Al) (atomic number: 13, mass number: 27), which one among the following statements is NOT correct?
1
Number of electrons present in Al is 13
2
Number of protons present in Al is 13
3
Number of neutrons present in Al is 14
4
The valency of Al is 2
4
NDA General Ability 1st September 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The elemental composition of diamond is
1
Carbon and Hydrogen
2
Carbon and Oxygen
3
Pure Carbon
4
Pure Silicon
EXAM MAP