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Q.

The pair of compounds in which both the compounds give positive test with Tollen's reagent is

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a

Glucose and Sucrose

b

Fructose and Sucrose

c

Acetophenone and Hexanal

d

Glucose and Fructose

answer is D.

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Detailed Solution

Tollen's reagent or Tollen's test is one of the methods to detect the aldehyde group is a organic compound. Sugar molecules that have an aldehyde group can shows Tollen's test. 

Among the given options, glucose has an aldehyde group and Fructose has α-hydroxy ketones which undergoes enol formation and forms an aldehyde group. 

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