Question

The rotting of garbage is said to be completed when the garbage
A. Rot completely and not smell
B. Rot almost completely. but still smell bad
C. Rot only partially
D. No change at all

Answer 1

Hint: Decomposition is a complex biological and chemical process that begins when materials deteriorate, corrode, or become spoiled. Decomposition is the breakdown of complex organic compounds into simple organic and inorganic molecules at the most fundamental level.

Complete answer:
Rubbish rotting is said to be complete when the garbage has totally rotted without emitting any bad odour.
The process of garbage rotting involves following steps
(i) Waste materials such as fruit and vegetable peels, egg shells, spent tea leaves, waste food, dried leaves, newspapers, and other things should be deposited in a pit for composting.
(ii) A layer of earth has been placed over the pit.
(iii) Check the rubbish after 20-25 days. If the rubbish has rotted and gone black in colour with no foul odour, it has finished decomposing and is suitable to use as compost.

So, the correct answer is option A

Note:
Hydrogen sulphide has a rotten egg odour, while dimethyl sulphide and methanethiol have a rotten cabbage odour. They all have rather low odour thresholds, so even a few micrograms floating around in the air will wreak havoc on your sense of smell.