MCQ
Acid used for making permanent marking on the glass surface is
- A$HNO_3$
- B$HF$
- C$HIO_3$
- ✓$H_2SO_4$
✓
Answer
Correct option: D.
$H_2SO_4$
d
$HCl$ is gas at $R.T.$ (Hydrochloric acid is aqueous solution of $HCl$ which is liquid)
$HCl$ is gas at $R.T.$ (Hydrochloric acid is aqueous solution of $HCl$ which is liquid)
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$\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,\,\,\,\,} \\
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\end{array}$
→{O\,\,\,\,\,\,\,\,\,\,} \\
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