Question

Name the following:
A colourless liquid having choking smell.

Answer 1

Nitric Acid's $\left({\mathrm{HNO}}_3\right)$ Physical Properties:

1. Appearance: 98% pure acid is a colourless liquid. The colour of commercial acid ($68 percent) is brownish brown.
2. Odour: It has an unpleasant suffocating odour.

Thus, nitric acid $\left({\mathrm{HNO}}_3\right)$ is a colourless liquid having choking smell.