Question

Paheli dug two pits, A and B, in her garden. In pit A, she put a polythene bag packed with some

agricultural waste. In pit B, she dumped the same kind of waste but without packing it in
a polythene bag. She, then covered both the pits with soil. What did she observe after a month?
(a) Waste in pit A degraded faster than that in pit B.
(b) Waste in pit B degraded faster than that in pit A.
(c) Waste in both pits degraded almost equally.
(d) Waste in both pits did not degrade at all.

Answer 1

The correct option is B)

Explanation: (b) In comparison to pit A, pit B degraded faster because it was kept open and that's why it took oxygen much faster than pit A. Oxygen helps microbes to demoralize the organic waste. But, in the case of pit A, the plastic avoided the proper flow of air. That's why microbial degradation didn't take place in pit A.