Upon treatment with concentrated sulphuric acid, oxalates yield :

colourless carbon dioxide and CO gases

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coloured carbon monoxide

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only carbon dioxide

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only carbon monoxide

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Solution

The correct option is A colourless carbon dioxide and CO gases
On treatment with concentrated sulphuric acid, oxalates gives colourless CO₂ and CO gases. These gases burn with a bluish flame and turn lime water milky. Oxalates also decolourise KMnO₄ and give a white precipitate with CaCl₂.

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The following statement is correct only under certain conditions. Rewrite the statement including the appropriate conditions.
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Upon treatment with concentrated sulphuric acid, oxalates yield :

The correct option is A colourless carbon dioxide and CO gasesOn treatment with concentrated sulphuric acid, oxalates gives colourless CO2 and CO gases. These gases burn with a bluish flame and turn lime water milky. Oxalates also decolourise KMnO4 and give a white precipitate with CaCl2.

The correct option is A colourless carbon dioxide and CO gases
On treatment with concentrated sulphuric acid, oxalates gives colourless CO₂ and CO gases. These gases burn with a bluish flame and turn lime water milky. Oxalates also decolourise KMnO₄ and give a white precipitate with CaCl₂.