1
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Hydrogenation of vegetable oils using nickel catalyst is an example of
A
Substitution reaction
B
Elimination reaction
C
Addition reaction
D
Free-radical polymerization
2
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following materials is not an allotrope of carbon ?
A
Diamond
B
Graphene
C
Fly ash
D
Fullerene
3
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following reactions does not result in the evolution of hydrogen gas?
A
Reaction of zinc metal with dilute sulphuric acid solution
B
Mixing water to Plaster of Paris
C
Heating zinc metal with sodium hydroxide solution
D
Reaction of potassium metal with water
4
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following acids is predominantly found in tomatoes?
A
Acetic acid
B
Tartaric acid
C
Oxalic acid
D
Lactic acid