On heating with conc. $H_{2} S O_{4}$ , sucrose gives

C O

and

C O_{2}

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C O

and

S O_{2}

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C O, C O_{2}

and

S O_{2}

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None of these

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Solution

The correct option is D None of these
In the presence of concentrated sulfuric acid, $sucrose is dehydrated to produce carbon and water$ . The heat of the reaction vaporizes the water causing the column of carbon to form.

$R e a c t i o n :$
$C_{12} H_{22} O_{11} + c o n c . H_{2} S O_{4} \to 12 C + 11 H_{2} O$

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Sodium oxalate on heating with conc $H_{2} S O_{4}$ gives

H_{2} S O_{4}

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C O

C O_{2}

H_{2} S O_{4}

C O

C O_{2}

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