Question

Paheli dug two pits, A and B, in her garden. In pit A, she put a polythene bag packet 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?

Options

• Waste in pit A degraded faster than that in pit B

• Waste in pit 6 degraded faster than that in pit A

• Waste in both pits degraded almost equally

• Waste in both pits did not degrade at all

Answer 1

Waste in pit 6 degraded faster than that in pit A

Explanation -

Waste in pit B degraded faster than that in pit A because packet B was kept open, so 02 could go in which helped the microbes in decomposing the waste materials easily. In packet A, since it was sealed, 02 could not enter and thus, microbial degradation did not occur.