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

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
2
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
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
3
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following metals does NOT react with cold water to liberate hydrogen gas?
A
Potassium
B
Iron
C
Calcium
D
Sodium
4
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33

Consider the following reaction:

2HgO $ \stackrel{\Delta}{\longrightarrow} $ 2Hg + O2

The respective state of HgO, Hg and O2 in the above reaction is

A
Liquid, solid, gas
B
Solid, solid, gas
C
Liquid, solid, liquid
D
Solid, liquid, gas
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NDA General Ability 13 April 2025 (13) NDA General Ability 21 April 2024 (14) NDA General Ability 3 September 2023 (19) NDA General Ability 16 April 2023 (16) NDA General Ability 4 September 2022 (13) NDA General Ability 10 April 2022 (15) NDA General Ability 18 April 2021 (15)
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