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

Ans : 3)
primary hydroxyl group = 3
secondary hydroxyl group = 1

Explanation :- ribose is the example of monosaccharide carbohydrate . Molecular formula of ribose is C₅H₁₀O₅ . And structural formula of ribose is shown in figure. Here it is clear that primary hydroxyl group { -OH group attached with primary Carbon atom } is 3 and secondary hydroxyl group { -OH group attached with secondary Carbon atom} is 1 .