Multiple choice

D.D.T. is an example of

  1. radioactive substance

  2. biodegradable substance

  3. non-biodegradable substance

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

D.D.T. is an example of non-biodegradable substance. It is a colourless contact insecticide, C14H9Cl5, toxic to humans and animals when swallowed or absorbed through the skin. It contains pesticides. Substances that are not broken down by biological processes are called non-biodegradable substances.