Download App

Pollution of Air and Water — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8SciencePollution of Air and Water1 Mark
MCQ
How is sewage water purified for recycling?
  • A
    By the action of fish.
  • B
    By the action of microorganisms.
  • ✓
    By the action of fuels.
  • D
    By the action of non$-$biodegradable chemicals.
✓

Answer

Correct option: C.
By the action of fuels.
Sewage water is purified for recycling by the action of non$-$biodegradable chemicals.

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

Explore more

More "M.C.Q. [I MARKS]" from Pollution of Air and Water→Pollution of Air and Water — all question types→Science STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

What will be the number of images formed when two plane mirrors are kept inclined at an angle of $60^\circ .$
→
A person cannot see the distant objects clearly $($though he can see the nearby objects clearly$)$. He is suffering from the defect of vision called:
→
The speed of moving ball increase further if force is applied in
→
The property of metals by which they can be beaten into thin sheets is called $..........$
→
Which of the following place has a network of pipelines which supply $\text{CNG}?$
→
How can the food items like milk, egg and meat can be produced on large scale ?
→
Assertion (A) Members of a species have common characteristics.
Reason (R) Species is a group of population, which are not capable of interbreeding.
→
Spring balance is a device used for measuring the $...........$ acting on an object.
→
Adam’s apple is
→
The primary function of the crystalline lens in the human eye is to.
→