Q. Boric acid is used in carom boards for smooth gliding of pawns because
A) $H_{3}BO_{3}$ molecules are loosely chemically bonded and hence soft
B) Its low density makes it fluffy
C) It can be powered to a very small grain size
D) H-bonding in $H_{3}BO_{3}$ gives it a layered structure
Explanation
(d)
Boric acid is used in carom boards for smooth gliding of pawns because H-bonding in $H_{3}BO_{3}$ gives it a layered structure.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.