Q. A carbohydrate is treated with $\alpha -$naphthol and conc. H_{2}SO_{4}. What colour will be formed at the junction of two liquids?
A) Blood-red
B) Violet
C) Brown
D) Orange
Explanation
(b)
This is Molisch’s test of carbohydrates. In this experiment, violet ring is formed at the junction of two liquids.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.