What is sludge?

Important Questions on Waste Water Story

EASY

7th CBSE

IMPORTANT

Science Booster>Chapter 19 - Waste Water Story>PRACTICE TIME>Q D

Name the gas obtained by decomposing sludge. (Biogas / LPG)

MEDIUM

7th CBSE

IMPORTANT

Science Booster>Chapter 19 - Waste Water Story>PRACTICE TIME>Q D

What is sewage?

EASY

7th CBSE

IMPORTANT

Science Booster>Chapter 19 - Waste Water Story>PRACTICE TIME>Q D

What are the various uses of water?

MEDIUM

7th CBSE

IMPORTANT

Science Booster>Chapter 19 - Waste Water Story>PRACTICE TIME>Q D

Name two waterborne diseases.

MEDIUM

7th CBSE

IMPORTANT

Science Booster>Chapter 19 - Waste Water Story>PRACTICE TIME>Q E

What do you mean by wastewater treatment?

MEDIUM

7th CBSE

IMPORTANT

Science Booster>Chapter 19 - Waste Water Story>PRACTICE TIME>Q E

Why is it important to treat the sewage before it is discharged into the rivers?

MEDIUM

7th CBSE

IMPORTANT

Science Booster>Chapter 19 - Waste Water Story>PRACTICE TIME>Q E

What happens when the sewage is passed through bar screens?

MEDIUM

7th CBSE

IMPORTANT

Science Booster>Chapter 19 - Waste Water Story>PRACTICE TIME>Q E

How is biogas formed in sedimentation tank?