Question

What is a toxic waste?

(a) Substances those are not poisonous

(b) Substances those are poisonous only when it taken in large quantity

(c) Substances those are poisonous only when it taken in small quantity

(d) Substances which work as an antidote for toxic materials

I had been asked this question by my school principal while I was bunking the class.

The question is from Hazardous Waste topic in portion Environmental Pollution of Energy Management

Answer 1

The correct choice is (c) Substances those are poisonous only when it taken in small quantity

To explain I would say: Toxic wastes are substances that are poisonous even in very small or trace amounts. Some may have an acute effect on humans causing death, others may have a chronic or long term effect, slowly causing irreparable harm to humans and other organisms.