Savage Waste(سیوریج کا فضلہ):
Which of the following is a mixture of both industrial and domestic waste?
a) sewage waste
b) evaporation
c) pollution
d) all of these
Which of the following waste used as an irrigation source due to high organic contentand plant nutrients?
a) steppes
b) sewage waste
c) both a & b
d) all of these
How many methods of sewage treatment?
a) 1
b) 2
c) 3
d) 4
Explanation:Physical method, biological method, chemical method.
Which of the following processes involved in physical method of sewage treatment?
a) screening
b) filtration
c) sedimentation
d) all of these
In which of the following method treatment of human waste is done by bacteria and micro-organisms?
a) biological method
b) chemical method
c) physical method
d) all of these
