Which of the following is the richest energy compound?

The richest source of carbohydrates is:

Fructose found in fruit juices is a ........ sugar.

Which of the following statements regarding the structure of glycogen is incorrect?

Glycogen is a.........

Given below are two statements.
Statement $I$ - Lactose on hydrolysis converts into glucose and galactose.
Statement $II$ - Galactose also plays the same role as glucose in respiration.
In the light of the above statements,select the correct option given below: