Q. 344.2( 5 Votes )

What do you obser

Answer :

when dil. HCl is added on Zn pieces taken in a test tube, there is evolution of a colorless gas with brisk bubbles from the test tube.

The gas can be identified by bringing a match stick near the gas, the gas burns with a pop sound which confirms that the gas evolved is H2.

H2 gas is used in space crafts.

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