Which of the given options is NOT recommended as a desirable property of the transporting truck used for collection of municipal solid waste?
- ASharp corners and edgesCorrect
- BStrength and durability
- CWater-tightness
- DMade of stainless steel
Solution
Concept
MSW collection trucks should be strong, durable, watertight and easy to clean, with rounded corners and no sharp edges.
Step-by-step solution
1. List the good properties of an MSW collection truck: strong, durable, watertight, corrosion resistant, easy to clean. 2. Sharp corners and edges collect waste and dirt, are hard to clean and can injure workers. 3. So sharp corners and edges are NOT desirable. 4. Answer is (A).
Explanation
A waste collection truck must be easy to clean and safe for workers. Sharp corners and edges hold dirt and leachate and can cause injury. Rounded corners are preferred.
Why the other options are wrong
B: Strength and durability are needed for heavy daily use. C: Water-tightness stops leachate and bad smell from leaking out. D: Stainless steel resists corrosion from wet waste, so it is desirable.
Shortcut
Anything that makes cleaning hard or is unsafe is not desirable.
Common mistake
Picking stainless steel because it is costly. Cost is not the point here, since it gives good corrosion resistance.
Correct answer: A) Sharp corners and edges