Lesson 1 ·Class 9 · Waste Generation and Management · Sort Lab
Where Waste Comes From
Sorting waste by its source.
Sort each kind of waste by where it is generated.
Sorted 0/10
All items sorted — check each bin.
Free play — sort every item into the bin it belongs in; each correct drop tells you why. Switch to when you're ready to test yourself.
Ask who produced it: a home, a field, a factory, or the city as a whole.
What this lesson covers
Challenges to clear
- Fill the Industrial bin correctly.
- Sort every kind of waste.
- Fill the Municipal & sewage box — the waste a whole city produces together.
The task
Sort each kind of waste by where it is generated.
What this lesson covers
- Domestic: Vegetable peel and food scraps (Biodegradable, and ideal for composting.); Plastic wrappers, bottles and packaging (Non-biodegradable, and the hardest household waste to deal with.)
- Agricultural: Straw, husk and crop stubble (Burning it causes severe seasonal air pollution; composting is far better.); Pesticide and fertiliser run-off from fields (It washes into rivers and causes eutrophication.); Cattle dung from a dairy (Usable for biogas and manure rather than being wasted.)
- Industrial: Chemical effluent from a dyeing factory (Often toxic and non-biodegradable; must be treated before release.); Fly ash from a thermal power station (Enormous in volume; now used in cement and bricks.); Metal scrap and slag from a foundry (Much of it is recyclable if separated.)
- Municipal & sewage: Sewage from household drains and toilets (Carries pathogens, so it must be treated before discharge.); Street sweepings and market waste (Collected by the local body, and a major part of what a city must handle.)
Hint
Ask who produced it: a home, a field, a factory, or the city as a whole.