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Question

$S O_{2}$ gas may be produced by:
heating $S$ in absence of air
roasting $Z n S$
heating ferric sulphate
hydrolysing $N a_{2} S O_{4}$

A

heating ferric sulphate

B

hydrolysing

N a_{2} S O_{4}

C

heating

S

in absence of air

D

roasting

Z n S

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Solution

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Roasting of zinc sulphide yields $S O_{2}$ gas.

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