Question

Following types of chemical reactions are given below: (decomposition, neutralisation, cumbustion, oxidation-redustion). Which reaction type describes the following changes?

Answer 1

Answer:

Correct option is

C

a(iii), b(i), c(iv), d(ii)

(a) Combination reaction : Cao+CO

2

→CaCO

3

, in this reaction calcium oxide is combines with carbon dioxide to form calcium carbonate.

(b) Decomposition reaction : CaCO

3

→CaO+CO

2

, in this reaction calcium carbonate is decomposed to calcium oxide and carbon dioxide.

(c) Displacement reaction : Fe(s)+CuSO

4

(aq.)→FeSO

4

(aq)+Cu(s), in this reaction Fe displaces copper to form ferric sulphate.

(d) Analysis reaction : 2H

2

O→2H

2

+O

2

Hence, the correct option is C

Explanation:

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