JEE Main Chemistry question

1-propanol and 2-propanol can be distinguished by

(A)Oxidation with alkaline followed by reaction with Fehling solution
(B)Oxidation with acidic dichromate followed by reaction with Fehling solutionCorrect
(C)Oxidation by heating with copper followed by reaction with Fehling solution
(D)Oxidation with concentrated followed by reaction with Fehling solution

Answer: (B)

Solution

Oxidation of 1-propanol (primary) gives propanal, which reduces Fehling's solution (positive test), while oxidation of 2-propanol (secondary) gives acetone, which does not reduce Fehling's solution (negative test); this distinguishes the two.

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Question ID VK-148584