Formula of tear gas is
COCl2
N2O
C10H5ClN2
none of these
The lowest layer of earth's atmosphere is
troposphere
mesosphere
stratosphere
ionosphere
Global warming may result in
flood
cyclone
decrease in forest productivity
all of the above
Ultraviolet radiation is absorbed by
exosphere
Aerobic oxidation is caused by
aerobic bacteria in presence of excess of oxygen
aerobic bacteria in absence of oxygen
anaerobic bacteria in presence of oxygen
anaerobic bacteria in absence of oxygen
Persons working in cement plants and lime stone quarries are more prone to disease like
asthama
cancer
silicosis
pneumoconiosis
Which of the following pollutants is not emitted during volcanic eruptions ?
SO2
H2S
Hydrocarbons
CO
Ozone hole is maximum over
India
Pakistan
Australia
Antarctica
BHC and DDT act as
carcinogens
allergens
asthematic agents
all of these
Main pollutant from automobile exhaust is
CO2
NO
