Question

Which gas is evolved when a metal reacts with dilute acid ? How is this gas identified ?

Answer 1

The gas which is evolved is the hydrogen gas.
This can be identified by burning a candle near to the place of experiment. But Safely.


I hope this will help you..

Answer 2

Here's your answer!!

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◆When Metals reaction with Dilute acid ,"Hydrogen gas " is evolved.

For example :-
Fe+2HCL ------>FeCl2+H2


◆It can be identified by bringing the matchstick or candle near the test tube in which reaction is taking place. If it burn with producing a sound it means reaction between Metal and Acid is taking place in which Hydrogen gas is being evolved.

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Hope it helps you!! :)