Which among the following sugars is called as laevulose?

Which of the following does not show mutarotation?

An organic compound gives a positive result for Molisch's test as well as Benedict's test,but it does not give a positive result for Seliwanoff's test. Most probably,it is:

Glycogen is a branched chain polymer of $\alpha-D$-glucose units in which the chain is formed by $C_1-C_4$ glycosidic linkage,whereas branching occurs by the formation of $C_1-C_6$ glycosidic linkage. The structure of glycogen is similar to:

Which of the following statements are true about carbohydrates?
$(i)$ Monosaccharides can be hydrolysed.
$(ii)$ The two monosaccharide units obtained on hydrolysis of a disaccharide can either be same or different.
$(iii)$ Polysaccharides are non-sweet in taste.
$(iv)$ All monosaccharides are not reducing sugars.

The $\beta$ and $\alpha$ glucose have different specific rotations. When either is dissolved in water,their rotation changes until the same fixed value results. This is called: