4. Why is the amount of gas collected in one of the test tubes double the amount collected in the other on electrolysis of water ? Name this gas. How will you test it?
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Answer:
hydrogen gas
Explanation:
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the amount of gas collected in one of the test tube is double in another because a water molecule has more number of atoms of that gas compared to other. The more amount of gas is hydrogen and less amount of gas is oxygen. To test the presence of hrogen gas bring a lighted candle near the mouth of the test tube ,it will burn with a pop sound.....
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