EASY
7th CBSE
IMPORTANT
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What is the contamination of water by harmful substances and germs etc. called?

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Important Questions on Wastewater Story

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 18 - Wastewater Story>Summative ASSESSMENT>Q 2
How is the blackish-brown oily and lathery water that goes down the drain termed as? (Clean water / Wastewater)
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 18 - Wastewater Story>Summative ASSESSMENT>Q 3
What are the diseases caused by pollutants in water called?
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 18 - Wastewater Story>Summative ASSESSMENT>Q 4
What are the setups used for purifying wastewater called?
MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 18 - Wastewater Story>Summative ASSESSMENT>Q 5
Which bacteria decompose the biodegradable contaminants present in clarified water? (Aerobic bacteria/Anaerobic bacteria)
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 18 - Wastewater Story>Summative ASSESSMENT>Q 1

Name four diseases that can be caused by an improper drainage system.

MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 18 - Wastewater Story>Summative ASSESSMENT>Q 2

How should the waste oil/ghee be disposed off?

MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 18 - Wastewater Story>Summative ASSESSMENT>Q 3

What are the various types of on-site sewage disposal systems?

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 18 - Wastewater Story>Summative ASSESSMENT>Q 4

 What should be the properties of pure water?