Which of the following metals is not a pollutant ?
A). Mercury
B). Arsenic
C). Lead
D). Aluminium
What are the major pollutants of cigarette smoke?
A). Carbon monoxide and dioxin
B). Carbon monoxide and nicotine
C). Carbon monoxide and benzene
D). Dioxin and benzene
CNG used in automobiles to check pollution, mainly consists of
A). CH4
B). CO2
C). N2
D). H2
Which of the following is not a natural source of air pollution ?
A). Volcanic eruptions and lightening discharge
B). Biological decay of vegetable matter
C). Photochemical oxidation of organic number
D). None of the above
A powerful eye irritant present in smog is
A). Nitric oxide
B). Sulphur dioxide
C). Peroxyacetyl nitrate
D). Carbon dioxide