Chemistry - Hydrocarbon Question with Solution | TestHub
ChemistryHydrocarbonMiscellaneous/MixedMedium2 minQB
ChemistryMediumsingle choice
An unsaturated hydrocarbon X on ozonolysis gives A . Compound A when warmed with ammonical silver nitrate forms a bright silver mirror along the sides of the test tube. The unsaturated hydrocarbon X is :
Options:
Answer:
C
Solution:
Compound A gives a silver mirror with ammoniacal silver nitrate (Tollens' reagent), indicating that A is an aldehyde.
Ozonolysis of an alkyne produces carboxylic acids, except in the case of a terminal alkyne, where one product is formic acid (HCOOH).
Formic acid can reduce Tollens' reagent and gives a silver mirror test.
Among the given options, only 1-butyne (HC≡C–CH₂–CH₃) is a terminal alkyne.
Its ozonolysis produces formic acid, which is responsible for the positive Tollens' test.
Therefore, the unsaturated hydrocarbon X is HC≡C–CH₂–CH₃.
Stream:JEESubject:ChemistryTopic:HydrocarbonSubtopic:Miscellaneous/Mixed
⏱ 2mℹ️ Source: QB
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