1
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following is not an example of a redox reaction?
A
AlCl3 + 3H2O → Al(OH)3 + 3HCl
B
2NaH → 2Na + H2 
C
4Fe +3O→ 2Fe2O3 
D
CuSO4 + Zn → Cu + ZnSO4 
2
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following allotropes of carbon is isomorphous with crystalline silicon?
A
Coke
B
Diamond
C
Graphite
D
Coal
3
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following is the colour of hydrogen gas?
A
Light yellow
B
Orange
C
Black
D
Colourless
4
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following is not a pigment?
A
Zinc oxide
B
Chalk
C
White lead
D
Silica