A colourless acidic gas is emitted when the salt is treated with dilute HCl from the following salts is:

sulphide

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carbonate

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sulphate

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nitrate

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Solution

The correct options are
A sulphide
B carbonate
Carbonate and sulphide salts give $C O_{2}$ and $H_{2} S$ respectively which are colourless and acidic.

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