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) [NCERT 1974, 77; CPMT 1974, 77, 78; MP PMT 1996; MP PET 1996, 99]

A gas decolourised \[KMn{{O}_{4}}\] solution but gives no precipitate

1.	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) [NCERT 1974, 77; CPMT 1974, 77, 78; MP PMT 1996; MP PET 1996, 99]
A.	Ethane
B.	Methane
C.	Ethene
D.	Acetylene
Answer» D. Acetylene

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