What are contaminants?

Important Questions on Wastewater Story

HARD

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 18 - Wastewater Story>Exercise>Q 1

Why does the speed of the incoming wastewater slowdown in grit and sand removal tank?

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 18 - Wastewater Story>Exercise>Q 2

What is primary sludge? Explain how it is treated.

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 18 - Wastewater Story>Exercise>Q 3

Name two organic impurities present in sewage.

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 18 - Wastewater Story>Exercise>Q 3

Name two inorganic impurities present in sewage.

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 18 - Wastewater Story>Exercise>Q 3

Name two nutrients present in sewage.

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 18 - Wastewater Story>Exercise>Q 3

Name two microbes present in sewage.

EASY

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 18 - Wastewater Story>Exercise>Q 4

What practices should be followed to maintain sanitation at public places?

MEDIUM

7th CBSE

IMPORTANT

LEARNING SCIENCE>Chapter 18 - Wastewater Story>Exercise>Q 1

What is a septic tank? How is it used? How it works?