Q. Argol, a brown crust, formed during the fermentation of grape juice contains
A) $CO_{2}$
B) Fused oil
C) Potassium hydrogen tartarate
D) lye
Explanation
(c)
During germentation of grape juice, a brown crust is formed at the top which is called argol. This contains potassium hydrogen tartrate and is used for preparation of tartaric acid and Rochelle salt.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.