1
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language

Consider the following reaction:

Fe2O3(s) + 2Al(s) → 2Fe(s) + Al2O3(s)

Which of the following statements about the given reaction is NOT correct?

A
It is an example of displacement reaction
B
It is highly endothermic reaction
C
Fe2O3 acts as oxidizing agent
D
This reaction is applicable to joining of railway tracks
2
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language

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

LIST I

(Chemical process)

LIST II

(Reaction)

A.

Electrolysis of water

1.

Double displacement
reaction

B.

Burning of coal

2.

Combination reaction

C.

Iron nail immersed in copper sulphate solution

3.

Decomposition reaction

D.

Addition of barium chloride solution to aluminium sulphate solution

4.

Displacement reaction

A
A - 3, B - 4,C - 2, D - 1
B
A - 4, B - 2,C - 1, D - 3
C
A - 3, B - 2,C - 4, D - 1
D
A - 4, B - 1,C - 2, D - 3
3
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following processes involves chemical reaction?
A
Evaporation of petrol
B
Dissolution of salt in water
C
Storing of oxygen gas under pressure in a gas cylinder
D
Burning of magnesium ribbon in air
4
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following metals does NOT react with cold water to liberate hydrogen gas?
A
Potassium
B
Iron
C
Calcium
D
Sodium
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