Question

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

• A.
  (i) and (iii)
• B.
  (i) and (iv)
• C.
  (ii) and (iii)
• D.
  (ii) and (iv)

Answer 1

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).