A) alkaline \[\text{CuS}{{\text{O}}_{\text{4}}}\]solution
B) ammoniacal cuproxide solution
C) aqueous solution of sodium cupritartarate
D) ammoniacal \[\text{AgN}{{\text{O}}_{\text{3}}}\]solution
Correct Answer: D
Solution :
Tollens reagent is ammoniacal \[\text{AgN}{{\text{O}}_{\text{3}}}\text{.}\]It is used to distinguish between aldehydes and ketones.
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