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2016-04-13T15:35:04+05:30

This Is a Certified Answer

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H2 gas is liberated
e.g
zn+ h2so4---> znso4 +h2
 it can be tested by passing the gas through soap solution and then bringing  a candle near the soap  filled withgas.. the soap bubble bust and the h2 gas burns with a pop sound
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2016-04-13T15:39:04+05:30

This Is a Certified Answer

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Hydrogen gas is liberated when an acid reacts with a metal.
Ex:
Zn + 2 HCl ↔ ZnCl₂ + H₂
In the above reaction H₂ is liberated.

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