The letter '$D$' in carbohydrates signifies

Which of the following pairs of carbohydrates contains $galactose$ in both of them as one of the constituents?

Which of the following is not a biopolymer?

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.

$\alpha-D$-Glucopyranose and $\beta-D$-Glucopyranose are:

An example of a non-reducing sugar is: