Metallic sulphide reacting with hydrochloric acid forms salt and ___.

carbon dioxide gas.

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sulphur dioxide gas.

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hydrogen gas.

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hydrogen sulphide gas.

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Solution

The correct option is D
hydrogen sulphide gas.

Metallic sulphide reacting with hydrochloric acid forms salt and hydrogen sulphide gas.

$N a_{2} S + 2 H C l \to 2 N a C l + H_{2} S ↑$

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