Waste Water Story-II

Casual Mode - Take your time!

1 / 25
✓
Correct
0
✗
Incorrect
0
★
Score
0%
Multiple Choice

Which two types of impurities are separated by sand removal tank?

  1. Rays and tissue papers
  2. Pebbles and sand
  3. Detergents and grass pieces
  4. Oil and grease
Change Mode