JEE Main Chemistry question

Statement 1: Cycloalkanes decolourise the purple colour of dilute and cold KMnO or the red colour of bromine in carbon tetrachloride. Statement 2: Cycloalkenes undergo the electrophilic addition reactions characteristic of alkenes.

(A)Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
(B)Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
(C)Statement 1 is True, Statement 2 is False
(D)Statement 1 is False, Statement 2 is TrueCorrect

Answer: (D)

Solution

Ordinary cycloalkanes are fully saturated and, like acyclic alkanes, do *not* decolourise cold dilute KMnO (Baeyer's test) or bromine in CCl — these reagents specifically test for carbon–carbon multiple bonds,

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Question ID VK-142460