Which compound gives a silver mirror with Tollens reagent?

Apropanone
Bpropan-2-ol
Cpropanal
Dethoxyethane

Answer: C

Tollens reagent,

[Ag (NH X_{3}) X_{2}] X^{+}

, is reduced to metallic silver by aldehydes, which are oxidised to carboxylate. Propanal is an aldehyde, whereas a ketone, a secondary alcohol and an ether are unaffected.

Practice Reduction, Oxidation and Hydrolysis in Organic Chemistry More on Oxidation with KMnO4, K2Cr2O7, PCC, Jones

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