Question

When depth of insertion of turbidity rod increases, the reading in the turbidity rod ___

(a) Decreases

(b) Increases

(c) First decrease, then increase

(d) Remains constant

This question was posed to me in an online quiz.

The query is from Physical characteristic of Water in portion Quality of Water of Environmental Engineering

Answer 1

Correct answer is (a) Decreases

Explanation: Turbidity rod is inserted inside the water and the reading at which needle becomes invisible gives the turbidity.