Multiple choice

A lachrymator causes watering of the eyes. Which among the following acids is a powerful lachrymator?

  1. Fluorosulphuric acid

  2. Nitrosylsulphuric acid

  3. Chlorosulphuric acid

  4. Peroxymonosulphuric

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorosulphuric acid (HSO3Cl) is a distillable, colourless liquid that should be handled with care. It is a hygroscopic and a powerful lachrymator. It is used to prepare sulphonic acids, which are useful in detergents and as chemical intermediates.