Question

Question 7
Paheli dug two pits, A and B in her garden. In pit A, she put a polyhtene 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

(b) Waste in pit B degraded faster than that in pit A.

Polythene is a tough, light flexible synthetic resin made by polymerizing ethylene. Bacteria will take time to degrade the polythene and then wastes. So, waste in pit B degrads faster than that in pit A.