Multiple choice

Which of the following substances decompose(s) within one or two weeks?

  1. Cotton clothes

  2. Woollen clothes

  3. Paper

  4. Peels of vegetables and fruits left over foodstuff etc

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

 Decomposition refers to the breakdown of complex substances into simple ones. Different substances take different time period for the same process. Vegetables and fruit peels take about a week or two for  the same, while cotton and woollen clothes take longer. But, paper will be decomposed within a few days only.