question_answer 19)

  Which of the following material takes the longest time for biodegradation? (a) Cotton                           (b) Paper                             (c) Bone                               (d) Jute

Answer:

                (c) Out of the given options, bone takes the longest time for biodegradation, whereas cotton, paper and jute can be easily degraded by the action of microbes. Bone is made up of a protein fraction, mineral fraction and organic compounds.