Identify the tetrasaccharide from the following.

On heating glucose with Fehling's solution,we get a precipitate whose colour is

Sugars are

Which of the following $n$ mole molecules of carbohydrate contains $2n$ mole molecules of galactose,$n$ moles of glucose,and $n$ moles of fructose upon hydrolysis?

On prolonged heating with $HI$,glucose gives a compound '$C$',which can be obtained by Wurtz reaction using sodium metal and compound '$D$'. Identify '$D$'.

Lactose is a disaccharide of $......$.