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 sometime. 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.
1) What could be (1) X, (ii) Y, and (ii) Z ?
b) What is the process of converting sugar into substance Y by the action of X known as ?
c) What type of respiration is exhibited by X in the above process ?
Consider the following chemical reactions which take place in different organisms/tissues under various
conditions
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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.
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