What are the expected products of the hydrolysis of lactose?

For the complex conversion of $D^{-}$-glucose into the corresponding osazone,the minimum number of equivalents of phenylhydrazine required is:

Which of the following molecules would diffuse through a cell membrane?

Which of the following can be distinguished by Tollen's reagent?

Given below are two statements:
Statement $I$: Sucrose is dextrorotatory. However, sucrose upon hydrolysis gives a solution having a mixture of products. This solution shows laevorotation.
Statement $II$: Hydrolysis of sucrose gives glucose and fructose. Since the laevorotation of glucose is more than the dextrorotation of fructose, the resulting solution becomes laevorotatory.
In the light of the above statements, choose the correct answer from the options given below.

Which of the following is not an aldose?