MCQ
The light materials which float during waste water treatment is:
  • A
    Sludge.
  • Scum.
  • C
    Sewerage.
  • D
    Biogas.

Answer

Correct option: B.
Scum.
Scum.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free