Waste Generation and Management — Question 1

(a) Waste is any substance which is discarded after primary use, or is worthless, defective and of no use.

(b) Fly ash is gaseous waste of cement industry which contains fine solid particles of non-combustible ash.

(c) e-Wastes are electronic wastes that consist of discarded appliances using electricity like computers, TVs, etc.

(d) Composting means putting the waste organic matter to decay so that it can be used for fertilizing the agricultural land.

(e) Mine tailing are the left-over material after the processing of the mined products like copper, silver, gold, etc.