Which one of the following is a reducing sugar?

Which of the following is the correct structure of $L$-fructose?

Hydrolysis of sucrose is called

The hydrolysis of sucrose produces a mixture which is:

Given $D$-Glucose. The compound$(s)$,which on reaction with $HNO_3$ will give the product having degree of rotation,$[\alpha]_{D}=-52.7^{\circ}$ is (are)

Fructose and glucose can be distinguished by