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Question
Which of the following reagents can be used to distinguish ethene from ethyne?
A
$$Br_2 /CCl_4$$
B
cold aqueous or alkaline $$KMnO_4$$ solution
C
none of the above.
D
Ammoniacal $$CuCl$$ solution
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Solution
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Correct option is B. Ammoniacal $$CuCl$$ solution Ammoniacal $$CuCl$$ solution reagents can be used to distinguish ethene from ethyne because ammoniacal $$CuCl$$ reacts with ethyne but not with ethene.
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