A non-volatile, non-electrolyte solid solute when dissolved in 40 g of a solvent, the vapour pressure of the solvent decreased from 760 mm Hg to 750 mm Hg . If the same solution boils at 320 K , then the number of moles of the solvent present in the solution is $\_\_\_\_$ . (Nearest integer)

[Given: boiling point of the pure solvent $=319.5 \mathrm{~K}$,

$\mathrm{K}_{\mathrm{b}}$ of the solvent $=0.3 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$ ]

Amongst the following, the total number of compounds soluble in aqueous NaOH at room temperature is :

Product C of the following reaction sequence will be

Given below are two statements :

Statement I : The structure of Maltose is given below:

Statement II : The structure of Lactose is given below :

In the light of the above statements, choose the correct answer from the options given below :