CO damage the…………..
a) central nervous system
b) heart
c) both a & b
d) none of these
Plants take carbon dioxide during process of
a) photosynthesis
b) evaporation
c) respiration
d) condensation
………causes irritation of eyes, pneumonia, asthma and headache.
a) CO
b) CO2
c) SO2
d) NO2
Sulphur dioxide damage…………..
a) limestone
b) marble
c) leather
d) all of these
NOx reacts with other pollutants and oxygen to form…………..
a) ozone
b) solution
c) suspension
d) solvent
NOx forms the photochemical smog, makes the air hazy and difficult to ……… through.
a) touch
b) see
c) hear
d) none of these
