question_answer

Glucose gives silver mirror with Tollens reagent; This shows the presence or:              

A)  \[-COOH\]    

B)         \[-OH\]                 

C)                        \[-COH\]

D)                                       

Correct Answer: C

Solution :

Tollens reagent (ammoniacal silver nitrate solution) is a mild oxidising solution. It easily oxidise aldehydes to carbpxylic acid and silver is precipitated to form silver mirror. Tollens reagent is used to detect the presence of \[-CHO\] (aldehydic) group in a compound any aldehyde \[\xrightarrow{Tollens\,reagent}\] silver mirror.