Question

The number of primary and secondary hydroxyl group in ribose are
1. 1,3
2. 2,3
3. 3,1
4. 3,2

Answer 1

2nd option brother.. it's so simple yrr

Answer 2

Answer: 1) 1,3

Explanation: Ribose is a carbohydrate with general formula $C_5H_{10}O_5$. It is an aldopentose  which means it is a monosaccharide which can not be further decomposed to simple sugar.It contains five carbon atoms and contains an aldehyde functional group in open chain structure.

Primary $1^0$ hydroxyl groups are those which are attached to a carbon which is further attached to a single carbon atom.

Secondary $2^0$ hydroxyl groups are those which are attached to a carbon which is further attached to two more carbon atoms.