Question

Which of the following methods cannot be used for waste disposal?

(a) Dumping

(b) Gasification

(c) Incineration

(d) Open sea disposal

I got this question at a job interview.

This interesting question is from Basic Aspects of Solid Waste Management in division Biotechnology for Solid Waste Management of Environmental Biotechnology

Answer 1

Correct choice is (d) Open sea disposal

To explain I would say: If open sea disposal method is used for disposing waste, a lot of aquatic organisms would be affected and in long run it might affect other land organisms as well, whereas, dumping is done in low lying areas, gasification is the degradation of organic matter in anaerobic conditions and incineration involves chemical reaction, all these methods doesn’t cause much damage to the environment.