Slaking of lime is
(i) an endothermic reaction
(ii) an exothermic reaction
(iii) a combination reaction
(iv) a decomposition reaction

(i) and (iii)

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(i) and (iv)

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(ii) and (iii)

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(ii) and (iv)

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Solution

The correct option is C
(ii) and (iii)
The reaction of calcium oxide with water to produce slaked lime (calcium hydroxide) releasing a large amount of heat is called slaking of lime. It is an exothermic reaction. A reaction in which a single product is formed from two or more reactants is known as a combination reaction. Therefore, slaking of lime is an exothermic as well as a combination reaction.

Hence, the correct answer is option (c).

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Similar questions

Q. The following reaction is an example of a

2 P b (N O_{3})_{2} (s) H e a t - -- \to 2 P b O (s) + 4 N O_{2} (g) + O_{2} (g)

I. Combination reaction
II. Decomposition reaction
III. Endothermic reaction
IV. Exothermic reaction

C + O_{2} \to {CO}_{2} + Heat

The given reaction is a/an example of:

Q. (a) What do you understand by exothermic and endothermic reactions?
(b) Give one example of an exothermic reaction and one of an endothermic reaction.
(c) Which of the following are endothermic reactions and which are exothermic reactions?
(i) Burning of natural gas
(ii) Photosynthesis
(iii) Electrolysis of water
(iv) Respiration
(v) Decomposition of calcium carbonate

The following reaction is an example of a
$2 P b (N O_{3})_{2} (s) H e a t - -- \to 2 P b O (s) + 4 N O_{2} (g) + O_{2} (g)$
I. Combination reaction
II. Decomposition reaction
III. Endothermic reaction
IV. Exothermic reaction

(a) What do you understand by exothermic and endothermic reactions ?

(b) Give one example of an exothermic reaction and one of an endothermic reaction.

(i) Buring of natural gas (ii) Photosynthesis

(iii) Electrolysis of water (iv) Respitation

(v) Decomposition of calcium carbonate

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Slaking of lime is (i) an endothermic reaction (ii) an exothermic reaction (iii) a combination reaction (iv) a decomposition reaction

Slaking of lime is
(i) an endothermic reaction
(ii) an exothermic reaction
(iii) a combination reaction
(iv) a decomposition reaction