Q. A compound gives negative test with ninhydrin and positive test with Benedict’s solution. The compound is
A) A protein
B) An amino acid
C) A lipid
D) A mono saccharide
Explanation
(d)
Protein given blue-violet colour with ninhydrin while carbohydrate give negative test with ninhydrin. Carbohydrates give brown red ppt. with Benedict’s solution. Hence, compound is a monosaccharide
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.