EXERCISE
Geetha Iyer Science Solutions for EXERCISE
Simple step-by-step solutions to EXERCISE questions of Wastewater Management from Science Now 7. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from EXERCISE with Hints & Solutions
Treated wastewater can be let off into the sea and oceans.
Sewage is made up of solid waste suspended in water.
Activated sludge is decomposed by bacteria to produce biogas that can be used in the production of electricity.
In an open drain, fats can clog the pores in the soil, affecting the filtering of water through the soil.
Plastic covers should be disposed down the drains; it is the safest disposal method.
You might have seen the air vents from a sewer line in your homes. What is the purpose of that?
Identify the following structures that help in the disposal of wastewater. 
Identify the following structures that help in the disposal of wastewater. 
