The $C_4$-epimer of glucose is:

The reaction of $D$-glucose with ammoniacal $AgNO_3$ produces:

The correct representation in $6-$membered pyranose form for the following sugar $[X]$ is

Which of the following reactions of glucose can be explained only by its cyclic structure?

What is the value of specific rotation exhibited by the fructose molecule?

Consider the following:
Statement-$I$ : Lactose is composed of $\alpha-D$-glucose and $\beta-D$-galactose.
Statement-$II$ : Lactose is a reducing sugar.
The correct answer is