Answer:
Metals react with dil. sulphuric acid to give metal sulphates and hydrogen gas. For example, \[Zn\left( s \right)+ {{H}_{2}}S{{O}_{4}}\left( aq \right)\to ZnS{{O}_{4}}\left( aq \right)+\underset{ \left( Hydrogen gas \right)}{\mathop{{{H}_{2}}}}\,\uparrow \]. Test for hydrogen gas: Take about 5 ml of dilute sulphuric acid in a test tube and add a few pieces of zinc granules to it. Hydrogen gas is evolved which forms bubbles in the soap solution. Bring a burning candle near hydrogen gas?filled bubble. It burns with a pop sound..
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