How is municipal solid waste classified on the basis of its source?
- AResidential refuse and non-residential refuse
- BIndustrial waste and non-industrial waste
- CHouse refuse, street refuse and trade refuseCorrect
- DResidential waste and industrial waste
Solution
Concept
By source, municipal refuse is commonly grouped as house refuse, street refuse and trade refuse.
Step-by-step solution
1. The question asks how refuse is classified by its source. 2. Standard Indian textbooks group municipal refuse by where it comes from. 3. Houses give house refuse, roads and streets give street refuse, and shops, markets and business places give trade refuse. 4. So the answer is house refuse, street refuse and trade refuse.
Explanation
Municipal refuse is grouped by its place of origin. Waste from homes is house refuse, waste swept from roads is street refuse, and waste from shops and businesses is trade refuse. This three-way grouping is the standard one in Indian textbooks.
Why the other options are wrong
A: Residential and non-residential is too broad and is not the standard grouping. B: Industrial and non-industrial is not the usual source-based grouping of municipal refuse. D: Residential and industrial leaves out street and trade (commercial) refuse.
Shortcut
Remember H-S-T: House, Street, Trade.
Common mistake
Students pick a two-way grouping (A or D) and forget street refuse.
Correct answer: C) House refuse, street refuse and trade refuse