In the preparation of chlorine gas from manganese dioxide, concentrated sulphuric acid is added to __________ .

remove moisture from the gas

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increase the moisture in the gas

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to observe the colour change

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heat the manganese dioxide

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Solution

The correct option is A remove moisture from the gas
Concentrated sulphuric acid has an extreme attraction for water.
It removes the moisture content from the chlorine gas to produce dry chlorine.

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