Some steps related to collection of municipal solid waste have been mentioned below. A. Collection by sweepers in small hand driven carts. B. Dumping into masonry chambers constructed along roadsides. C. Collection in small containers in individual houses. D. Collection into municipal trucks. What is the correct sequence of the conventional system of collection of municipal solid waste, as per Indian scenario from start to end?
- AC-A-B-DCorrect
- BA-D-B-C
- CC-B-A-D
- DA-C-D-B
Solution
Concept
In the conventional Indian system, waste moves from house bins to sweepers' carts, then to roadside community bins, then to municipal trucks.
Step-by-step solution
1. Waste is first stored in small containers in each house (C). 2. Sweepers collect street and house waste in small hand-driven carts (A). 3. The carts are emptied into masonry chambers (community bins) built along roadsides (B). 4. Municipal trucks lift the waste from these bins and carry it to the disposal site (D). 5. Sequence = C-A-B-D, which is option (A).
Explanation
Waste always starts at the source, the household bin. Sweepers then carry it in hand carts to roadside masonry bins. Municipal trucks finally take it from these bins to the disposal site.
Why the other options are wrong
(B) A-D-B-C starts with sweepers and ends at household bins, which is reversed. (C) C-B-A-D puts dumping into roadside bins before sweeper collection, which is the wrong order. (D) A-C-D-B does not start at the source, and the trucks come before the roadside bins.
Shortcut
Follow the waste from small to big: house bin → hand cart → roadside bin → truck.
Common mistake
Thinking households dump directly into roadside chambers and skipping the sweeper cart step.
Correct answer: A) C-A-B-D