CLASS 7 Chapter 18 Wastewater Story

Short answer type questions

 

Question1. What do you mean by sewage treatment?

Question 2. What is sewage?

Question 3. Why chlorine is used to clean water?

Question 4. What is sewerage?

Question 5. Why cleaning water is important?

Question 6. What are the by-products of wastewater treatment?

Question 7. What are aerobic and anaerobic bacteria?

Question 8. Why open drains are dangerous to our environment?

Question 9. What is the vermi-processing toilet?

Question 10. How can we minimize pollutants in water?

Long answers type questions

 

Question 1. Explain all the processes that take place in the wastewater treatment plant to clean the wastewater.

Question 2. What are the harmful effects of waste products that we throw in drains?

Question 3. What are the alternative arrangements for sewage disposal?

Question 4. What are the adverse effects of poor sanitation and contaminated drinking water?

Question 10. In what ways we can contribute to maintaining sanitation in public places?