Which of the following does not show mutarotation?

Consider the following statements:
Statement-$I$: Cane sugar is a disaccharide of $\alpha-D$-glucose and $\beta-D$-fructose.
Statement-$II$: Milk sugar is a disaccharide of $\beta-D$-glucose and $\beta-D$-galactose.
The correct answer is:

Which of the following reactions of glucose can be explained only by its cyclic structure?

Which of the following is a non-reducing sugar?

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

Glucose on reaction with $Br_{2}$ water gives