Which of the following reagent is used to convert 2-butanone into propanoic acid?

(i) N a O H, I_{2} (i i) H^{+}

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Tollen’s reagent

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Fehling solution

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L i A l H_{4}

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Solution

The correct option is A $(i) N a O H, I_{2} (i i) H^{+}$
(a) $C H_{3} - C H_{2} - O | | C - C H_{3} i . N a O H / I_{2} - ------ \to i i . H^{+} C H_{3} - C H_{2} - O | | C - O H + C H I_{3}$

(b) and (c) not give positive test with ketones.

(d)

Hence, correct option (a).

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