A gas is released when copper reacts with conc. sulphuric acid. The name of the gas released is

Hydrogen sulphide

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Sulphur dioxide

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Sulphur trioxide

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Hydrogen

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Solution

The correct option is B Sulphur dioxide
Sulphuric acid gets reduced to sulphur dioxide along with water and oxygen. The equation of the reaction between copper and concentrated sulphuric acid is given below.

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

Since there is only one gas that is being produced in this reaction so the answer is sulphur dioxide $S O_{2}$ .

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