Question

In the manufacture of sulphuric acid by contact process, Tyndall box is used to :

• A. filter dust particles
  
• B. remove impurities
• C. convert $S{O}_2$ to $S{O}_3$
• D. test the presence of dust particles

Answer 1

The correct option is D test the presence of dust particles

The manufacture of sulphuric acid by contact process, Tyndall box is used to test the presence of dust particles.

The Tyndall effect is useful to detect the presence of colloidal particles.

A beam of light is passed through a colloidal solution and observed.

Hence option D is correct.