A gas decolourised KMn O_4 solution but gives no precipitate with… - Vidyadip

MCQ

A gas decolourised $KMn{O_4}$ solution but gives no precipitate with ammoniacal cuprous chloride is or Which of the following gases does not give a precipitate with ammoniacal solution of silver nitrate but decolourizes $KMn{O_4}$ (neutral or slightly alkaline)

A
Ethane
B
Methane
✓
Ethene
D
Acetylene

✓

Answer

Correct option: C.

Ethene

c
(c) Ethane and Methane does not decolourise $KMn{O_4}$ and does not react with ammonical cuprous chloride. Acetylene decolourise $KMn{O_4}$ solution and also gives red ppt. with ammonical cuprous chloride. On the other hand ethene decolourize $KMn{O_4}$ solution but does not react with ammonical cuprous chloride.

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