Question

What is waste? In how many groups, wastes are classified? Write different methods of waste disposal.

Answer 1

Answer:

Waste are unwanted or unusable materials. Waste is any substance which is discarded after primary use, or is worthless, defective and of no use.

Wastes are produced from different activities such as household activities, agricultural activities industrial activities, hospitals, educational institutions, mining operations, and so on.

There are eight major groups of waste management methods, each of them divided into numerous categories. Those groups include source reduction and reuse, animal feeding, recycling, composting, fermentation, landfills, incineration and land application.

Answer 2

Answer:

waste can be classified in 3 groups liquid , gas , solid.                                                        

we can recycle or reuse it.