Q. Milk can be preserved by adding a few drops of :
A) Formic acid solution
B) Formaldehyde solution
C) Acetic acid solution
D) Acetaldehyde solution
Explanation
(b)
Formalin acts as preservative for milk.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.