Question

how many types of dustbin

Answer 1

THere are ,mainly two types of dustbin named 
1) biodegrable dustbin
2)non biodegrable dustbin 
and yeah as the name suggest they works like that only means one store biodegrable material and other non biodegrable

Answer 2

There are 2 types of dustbins .

 1) Green Dustbin - That is used for collecting kitchen waste plant or animal waste or biodegradable waste.

2) Blue Dustbin - That is used for collecting non- biodegradable waste like plastic , metal and glass objects.