Which of the following compound can not reduce Tollen's reagent?

Maltose

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C H_{3} C O C H_{3}

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Nitrobenzene

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Lactose

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Solution

The correct option is C Nitrobenzene
Tollen's test is given by those compounds which contain free aldehydic group as can be seen $C H_{3} C O C H_{3}$ does not contain aldehydic group but it contains ketonic group, similarly Nitrobenzene contains nitro group $(- N O_{2})$ . Hence, option (c) and (b) does not reduce tollen's reagent. (A) and (D) both contains a hemiacetal and thus both can reduce Tollen's reagent.

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