Multiple choice

Which of the following is not a non–biodegradable substance? 

  1. Plastic bag

  2. Woolen clothes

  3. Tin

  4. Aluminium

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

Plastics cannot be decomposed by microbial action. Tin and aluminium are metals and the same is true for metals also. Woolen clothes are obtained from natural source and thus, are biodegradable. 

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