Question

4. Experimental set up deviced by ......... is used to observe water clarity.
a. Wingbarg
b. Tyndall
c. Strassburger
d. Waldeyer​

Answer 1

An experimental set up by Tyndall is used to observe water clarity.

Option (b) is correct.

Explanation:

• In the commercial labs, the Tyndall set up is used to determine the water clarity.
• In this effect, light is passed through the colloidal solution.
• As the light passes through the solution it scatters in a colloidal solution, but if the solution is true then no scattering occurs.
• Tyndall effect is used to determine if a solution is a true or colloidal solution.