Q.68 Which of the following is NOT a type of municipal solid waste based on source?
- ATrade refuse
- BStreet refuse
- CHouse refuse
- DIndustrial refuseCorrect
Solution
Concept
Municipal solid waste comes from houses, trade or commercial places, and streets. Industrial waste is managed separately.
Step-by-step solution
1. List the sources of MSW: house (residential), trade (commercial or market), and street sweeping. 2. Industrial refuse comes from factories and may be hazardous. 3. It is managed under separate rules, not as MSW. 4. So the answer is D.
Explanation
MSW means waste collected by the city from homes, shops and markets, and streets. Industrial waste is the responsibility of the industry and is handled separately. So industrial refuse is not a type of MSW.
Why the other options are wrong
A, B and C are all standard sources of municipal solid waste.
Shortcut
MSW = House + Trade + Street; Industry is separate.
Common mistake
Thinking all refuse in a city is municipal waste, including industrial waste.
Correct answer: D) Industrial refuse