Question

Glycerol has

• A. 1-primary-OH, 2-secondary-OH
• B. 2-primary-OH, 1 secondary-OH
• C. 3-primary-OH
• D. 1-primary-OH, 1 secondary OH, 1-tertiary OH

Answer 1

Answer: (B)

Glycerol has two types of $-OH$ groups. Two $-OH$ groups $\left(1^{\circ }\right)$ are primary but one $-OH$ group $\left(2^{\circ }\right)$ is secondary

Note : Glycerol is highly viscous due to entensive intermolecular $H$ bonding.