Some sugar solution is taken in a test-tube and a little of substance X in powder form is added to it. The mouth of test-tube is closed with a cork and allowed to stand for some time. On opening the cork, a characteristic smell of substance Y is obtained and a gas Z is also observed to be formed.The gas Z extinguishes a burning matchstick.
[a] What could be X, Y and Z?
[b] What is the process of converting sugar into substance Y by the action of X known as?
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Answer:
x will be hydrochloric acid
y will be rotten egg smell
z will be carbondoxide
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