Hot conc. $H_{2} S O_{4}$ acts as moderately strong oxidising agent. It oxidises both metals and non-metals, Which of the following element is oxidised by conc. $H_{2} S O_{4}$ into two gaseous products?

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answer is C.

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Detailed Solution

$H_{2} S O_{4}$ is a moderately strong oxidising agent which oxidises both metals and non-metals as shown below

$C u + 2 H_{2} S O_{4} (c o n c) \to C u S O_{4} + S O_{2} + 2 H_{2} O$

$S + 2 H_{2} S O_{4} (c o n c) \to 3 S O_{2} + 2 H_{2} O$

While carbon on oxidation with $H_{2} S O_{4}$ produces two types of oxides $C O_{2}$ and $S O_{2}$

$C + 2 H_{2} S O_{4} (c o n c) \to C O_{2} + 2 S O_{2} + 2 H_{2} O$

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