Q. The acid employed for etching of glass is
A) $HCl$
B) $HClO_{4}$
C) $HF$
D) Aqua regia
Explanation
The correct answer is Option C: $HF$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.