Multiple choice

Which of the following two waste materials cannot undergo rotting?

  1. Egg shell and butter

  2. Cotton fabric and newspaper

  3. DDT and synthetic fibers

  4. Animal bones and wool

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

DDT is a chemical which is used for killing insects and synthetic fiber is  not an organic material. Hence these cannot undergo rotting. Therefore, (3) is correct answer.