MEDIUM
7th CBSE
IMPORTANT
Earn 100

What is trade waste? What does it generally contain?

Important Questions on Wastewater Story

MEDIUM
7th CBSE
IMPORTANT
Interactive Science 7>Chapter 18 - Wastewater Story>SUMMATIVE ASSESSMENT>Q 3
Differentiate between sewage and sewer.
MEDIUM
7th CBSE
IMPORTANT
Interactive Science 7>Chapter 18 - Wastewater Story>SUMMATIVE ASSESSMENT>Q 4
Why is sewage passed through the grit chamber after passing through bar screen?
MEDIUM
7th CBSE
IMPORTANT
Interactive Science 7>Chapter 18 - Wastewater Story>SUMMATIVE ASSESSMENT>Q 5
Which microbe does act on sludge in the sludge digester? What is produced in this reaction? What is its use?
HARD
7th CBSE
IMPORTANT
Interactive Science 7>Chapter 18 - Wastewater Story>SUMMATIVE ASSESSMENT>Q 1
Write three steps followed in a waste water treatment plant. Describe the second step in detail.
MEDIUM
7th CBSE
IMPORTANT
Interactive Science 7>Chapter 18 - Wastewater Story>SUMMATIVE ASSESSMENT>Q 2
Mention any five ways that we can practise to stop polluting our rivers.
MEDIUM
7th CBSE
IMPORTANT
Interactive Science 7>Chapter 18 - Wastewater Story>SUMMATIVE ASSESSMENT>Q 3
What are the problems with open drains?
MEDIUM
7th CBSE
IMPORTANT
Interactive Science 7>Chapter 18 - Wastewater Story>SUMMATIVE ASSESSMENT>Q 4
Classify the following wastes into biodegradable and non-biodegradable wastes.
Cotton, plastic bags, grass, broken glass, tin cans, paper, faeces, used syringes, needle, food remains, surgical gloves, sanitary towel.
MEDIUM
7th CBSE
IMPORTANT
Interactive Science 7>Chapter 18 - Wastewater Story>FORMATIVE ASSESSMENT>Q 1
Dirty water generated at homes and in industries.