Lead is one of the most serious environmental pollutants which affects
Contamination of water with sewage is indicated by cysts of
Non-Ionizing radiations with specific biological effects are
Carbon dioxide is called green-house gas because it is
Answer: Transparent to sunlight but traps heat
Which one of the following pairs of gases are the major causes of "Greenhouse Effect"?
Trichoderma harzianum has proved a useful microorganism for:
Answer: Bioremediation of contaminated soils
______ are used in electrostatic precipitators.
lf there was no CO2 in the atmosphere, the earth’s temperature would be
Answer: Less than the present
Ultraviolet radiation from sunlight causes the reaction that produces
Biological oxygen demand of ______ is the least.
Biochemical Oxygen Demand (BOD) in a river water
Answer: Increases when sewage gets mixed with river water
The two gases making highest relative contribution to the greenhouse gases are
DDT is a
Answer: Non-degradable pollutant
Ozone depletion in the stratosphere will cause
Answer: Increased incidence of skin cancer
Take Mock Tests