Water Quality Parameters MCQ with answer and solution

Concept

Jackson turbidimeter is used for high turbidity. Baylis and Hellige turbidimeters are used for low turbidity.

Step-by-step solution

1. A turbidity tube or rod is a simple field device for rough checks. 2. Baylis and Hellige turbidimeters are used for low turbidity values. 3. The Jackson candle turbidimeter works well for high turbidity (above about 25 JTU). 4. So the answer is the Jackson turbidimeter.

Explanation

The Jackson turbidimeter uses a candle flame seen through a column of water. It is suitable for highly turbid water. For low turbidity, Baylis or Hellige turbidimeters are used.

Why the other options are wrong

A: Turbidity tube or rod is a rough field method, not meant for high turbidity. B: Baylis turbidimeter is used for low turbidity. C: Hellige turbidimeter is used for low turbidity.

Shortcut

Jackson = high turbidity. Baylis and Hellige = low turbidity.

Common mistake

Thinking any turbidimeter works for all ranges. Each instrument has its own range.