CBSE Class 7 Science Wastewater Story Worksheet Set A


            Very Short Answer

Q1)      What is cleaning of water?

Q2)      What is sewage treatment?

Q3)      Define clarified water?

Q4)      Define wastewater?

Q5)      What is Swachh Bharat?


            Short Answer

Q6)      What do you understand by aeration?

Q7)      What do you understand by the sewage?

Q8)      Why water is called our life line?

Q9)      What do you meant by biogas?

Q10)    What is vermi-processing toilet?


            Long Answer

Q11)    What are the steps we have to take for wastewater treatment plant?

Q12)    State the difference between aerobic bacteria and anaerobic bacteria?

Q13)    Explain what are the better ways for housekeeping practices to minimise the waste while releasing down the drains?

Q14)    What is sludge and how it can be treated?

Q15)    What are the benefits of improving sanitization?

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