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Question

Which of the following compounds does not give a silver mirror with Tollen's reagent?

A
Methanoic acid
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B
Propanone
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C
Methanal
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D
both(a)and(c)above
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Solution

The correct option is A Propanone
Tollen's reagent is a chemical reagent used to determine the presence of an aldehyde or alpha hydroxy ketone functional group. It consists of silver nitrate and ammonia. A positive test gives precipitate of elemental silver.

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