Question

which gas is usually liberated when an acid reacts with a metal in straight with an example how will you test for the presence of this gas​

Answer 1

$\huge\underbrace\mathfrak\red{Answer}$

Hydrogen gas is liberated when an acid reacts with a metal. For example, when zinc metal reacts with dil. hydrogen is evolved and salt zinc chloride is formed as: It can be tested by bringing a burning candle near the gas.

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