Question

Which of the following is a gas waste or solid waste found in form of liquid?

(a) Water waste

(b) Liquid waste

(c) Solid waste

(d) Oxygen

I had been asked this question in my homework.

I would like to ask this question from Enzymes Catalyzing Pesticide Degradation Reactions in division Biodegradation of Pesticides in the Environment of Environmental Biotechnology

Answer 1

Correct option is (d) Oxygen

For explanation I would say: Solid waste or gaseous waste like meal scraps, waste food, racked leaves, sewage, animal manure etc. or bad smelling gas respectively are referred as unwanted waste material that is not in gas or liquid state. Molecular oxygen, liquid waste and water waste are not found in solid state.