During …………, in incinerators hundreds of new compounds are formed.
a) sublimation
b) condensation
c) combustion
d) evaporation
Sources of air pollutants:-
Natural sources:-
Natural sources of air pollutants are…………
a) rotting vegetation
b) volcanic eruption
c) both a & b
d) none of these
The natural sources of particulate pollutants are…………
a) soil erosion by wind
b) dust storms
c) natural forest fires
d) all of these
The contribution of natural source towards the particulate emission is ………… than man-made sources.
a) equal
b) greater
c) less
d) none of these
Carbon monoxide is produced during ………
a) volcanic eruption
b) natural gas emission
c) seed germination
d) all of these
