Question

Acid employed for etching of glass is?

• A. $\mathrm{HCl}$
• B. ${\mathrm{HNO}}_3$
• C. Aqua-regia
• D. $\mathrm{HF}$

Answer 1

The correct option is D

$\mathrm{HF}$

The explanation for the correct option:

Option(D): $\mathrm{HF}$

• Glass etching is known as a technique used for creating art on the surface of glass by applying acid, caustic or abrasive substances.
• The acid which is basically used for the process of glass etching is known as Hydroflouric acid ($\mathrm{HF}$).
• This gaseous acid has the property which producing a surface that resembles ground glass in its appearance.

The explanation for the incorrect option:

Option(B):${\mathrm{HNO}}_3$

• ${\mathrm{HNO}}_3$is not usually employed for etching of glass.
• Hence, the given option does not represent the correct concept.

Option(C):Aqua-regia

• The acid employed for the etching of glass is not considered Aqua-regia.
• Thus, the given option is the incorrect one.

Option(A):$\mathrm{HCl}$

• $\mathrm{HCl}$ is not usually employed for etching of glass.
• Hence, the given option does not coincide with the correct concept.

Hence, the acid employed for the etching of glass is $\mathrm{HF}$, option (D) is the correct answer.