1.

A colourless compound X on treatment with alc. KOH gave a gaseous compound Y. The compound Y decolourises bromine water and alkaline KMnO_(4) solution but gives no precipitate with ammoniacal cuprous chloride. The compound X is :

Answer»

Ethylene <BR>Ethyne
Ethylene DIBROMIDE
ETHYL bromide

Solution :`C_(2) H_(5)Br overset(alc. KOH)rarr CH_(2) = CH_(2)`
(decolourises `Br_(2)` water and alkaline `KMnO_(4)` but does not react with ammoniacal `Cu_(2)Cl_(2)`)


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