Question

which gas is fully liberate wen an acidreacts with metal​

Answer 1

Answer:

HYDROGEN is liberated when an acid reacts with metal.

Answer 2

$\huge\bold\red{HOLA}$

when an acid reacts with an active metal HYDROGEN gas is liberated.

EXCEPTION - acids does not react with element bellow hydrogen in activity series of metals to give hydrogen because such metals cannot displace hydrogen from the acid

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EXAMPLE -

Zn + H2SO4 ------> ZnSO4 + H2

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TEST -

1)Burning wooden splinter is extinguished in hydrogen

2)hydrogen burns with a pale blue flame producing pop sound.