1
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language

Match List I with List II and select the answer using the code given below the Lists : 

List I

(Reaction)

List II

(Type)

A.

CaO(s) + H2O (I) → Ca(OH)2 (aq)

1.

Single Displacement

B.

CaCO3 (s) → CaO(s) + CO2(g)

2.

Double displacement

C.

Pb(s) + CuCl2(aq) → PbCl2(aq) + Cu(s)

3.

Combination

D.

Na2SO4(aq) + BaCl2 (aq) → BaSO4(s) + 2NaCl(aq)

4.

Decomposition

1
A - 2, B - 1, C - 4, D - 3
2
A - 2, B - 4, C - 1, D - 3
3
A - 3, B - 4, C - 1, D - 2
4
A - 3, B - 1, C - 4, D - 2
2
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following is an endothermic reaction ?
1
CH4(g) + 2O2(g) → CO2(g) + 2O2(g)
2
C6H12O6(aq) + 6O2(g) → 6CO2(g) + 6H2O(I)
3
N2(g) + 3H2(g) → 2NH3(g)
4
2Pb(NO3)2(s) → 2PbO(s) + 4NO2(g) + O2(g)
3
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following is known as ‘water gas’ ?
1
H2O + CO2
2
NH3
3
H2 + N2
4
CO + H2
4
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following statements is NOT correct ?
1
Diamond is hard due to extended covalent bonding in it 
2
Fullerene is composed of five and six membered rings
3
Diamond is a good conductor of electricity 
4
Graphite is used as a lubricant