When zinc reacts with dilute sulphuric acid, a salt is formed with the release of a gas. The gas produced during this puts off a burning candle with a pop sound. The gas evolved during this reaction is:

hydrogen sulphide

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hydrogen

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oxygen

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sulphur dioxide

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Solution

The correct option is B hydrogen
Hydrogen gas is evolved mostly, when a metal reacts with an acid. When zinc reacts with dilute sulphuric acid, zinc sulphate, a salt, is formed with the release of hydrogen gas. The reaction involved is:

$Z n (s) + H_{2} S O_{4} (l) \to Z n S O_{4} (s) + H_{2} (g)$

When a burning matchstick is brought near the testtube containing hydrogen gas, it puts off the burning matchstick and produces a pop sound.

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