The balance reaction involved during extraction of zinc from its ore by roasting of zinc ore :

Z n S (s) + O_{2} H e a t - -- \to Z n O (s) + 2 S O_{2} (g)

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Z n S (s) + 3 O_{2} H e a t - -- \to Z n O (s) + 2 S O_{2} (g)

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2 Z n S (s) + 3 O_{2} H e a t - -- \to 2 Z n O (s) + 2 S O_{2} (g)

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Z n S (s) + 3 O_{2} H e a t - -- \to 2 Z n O (s) + S O_{2} (g)

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Solution

The correct option is B $2 Z n S (s) + 3 O_{2} H e a t - -- \to 2 Z n O (s) + 2 S O_{2} (g)$
The balanced chemical reaction for extraction of zinc from its ore by roasting of zinc ore is;
$2 Z n S (s) + 3 O_{2} h e a t - - \to 2 Z n O (s) + 2 S O_{2} (g)$

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Question 55
Give the reaction involved during extraction of zinc from its ore by

(a) roasting of zinc ore.
(b) calcination of zinc ore.

2 Z n S (s) + 3 O_{2} (g) h e a t - - \to 2 Z n O (s) + 2 S O_{2} (g)

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