The products formed when a pinch of sugar is strongly heated for fifteen minutes in a test tube are:

carbon and water vapour

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carbon, hydrogen and oxygen

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carbon dioxide and water vapour

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carbon dioxide and hydrogen

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Solution

The correct option is C carbon dioxide and water vapour
Any carbohydrate will give water and $C O_{2}$ after combustion.
Example: Combustion of Glucose,
$C_{6} H_{12} O_{6} + 6 O_{2} h e a t - - \to 6 C O_{2} + 6 H_{2} O$

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The products formed when a pinch of sugar is strongly heated for fifteen minutes in a test tube are:

The correct option is C carbon dioxide and water vapourAny carbohydrate will give water and CO2 after combustion.Example: Combustion of Glucose,C6H12O6+6O2heat−−→6CO2+6H2O

The correct option is C carbon dioxide and water vapour
Any carbohydrate will give water and $C O_{2}$ after combustion.
Example: Combustion of Glucose,
$C_{6} H_{12} O_{6} + 6 O_{2} h e a t - - \to 6 C O_{2} + 6 H_{2} O$