The pollutants can be in the form of ………..
a)solid particles
b) liquid particles
c) gases
d) all of these
The substances that are responsible for causing …………are called air pollution.
a) air pollution
b) noise pollution
c) water pollution
d) none of these
Pollutants may be…………
a) natural
b) man-made
c) both a & b
d) none of these
Types of air pollutants:-
Air pollutants can be classified into…..types.
a) 2
b) 3
c) 4
d) 5
Primary pollutants are substances, which are released directly into air or directly produced from a process such as…………
a) ash from a volcanic eruption
b) SO2 released from factories
c) CO gas from a motor vehicle exhaust
d) all of these
