EASY
7th CBSE
IMPORTANT
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Underground pipes that carry waste water are called .

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Important Questions on Waste Management

MEDIUM
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 18 - Waste Management>Exercises>Q C
Natural decomposers cannot break down _____ waste. (biodegradable / non-biodegradable)
MEDIUM
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 18 - Waste Management>Exercises>Q C
Waste water generated by industries is called industrial _____.
MEDIUM
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 18 - Waste Management>Exercises>Q C
Industrial waste water and _____ wastewater are the major causes of pollution of rivers. (municipal / Hand washed)
EASY
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 18 - Waste Management>Exercises>Q C
Organic matter is decomposed by _____ bacteria in aeration tanks.
EASY
7th CBSE
IMPORTANT
Basic Science For Class 7>Chapter 18 - Waste Management>Exercises>Q C
The solids that separate out from sewage after the action of bacteria are referred to as _____ sludge. (Primary / Secondary)