19207.Which one of the following pairs of gases are the major causes of "Greenhouse Effect"?
CO2 and N2O
CO2 and O3
CO2 and CO
CFCs and SO2
19209.According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health?
5.2 - 2.5
2.5 or less
1.5 or less
1.0 or less
19210.Which one of the following is a wrong statement?
Greenhouse effect is a natural phenomenon
Eutrophication is a natural phenomenon in freshwater bodies
Most of the forests have been lost in tropical areas
Ozone in upper part of atmosphere is harmful to animals
19211.Phosphate pollution is brought about by
Phosphate rocks
Fertilizers
Phosphate rocks and sewage
Fertilizers and sewage
19214.BOD of a pond is related to ______ in per unit volume of water
All the plants
All the nektons
All the microbes
All the animals
19215.Which one of the following statements is wrong in case of Bhopal, (India) tragedy?
It took place in the night of December 2/3/1984
Methyl Isocyanate gas leakage took place
Thousands of human beings died
Radioactive fall out engulfed Bhopal
19217.Carbon monoxide is a pollutant because it
Reacts with O2
Reacts with hemoglobin
Inhibits glycolysis
Inactivates nervous system
19218.As it travels along the food chain, the concentration of DDT
Increases
Remains constant
Decreases
Fluctuates randomly
19219.CO emitted by automobiles prevents O-transport to body tissues by
Changing O2 to CO2
Destroying hemoglobin
Forming a stable compound with hemoglobin
Obstructing the reaction of O2 with hemoglobin
19221.Decomposition of domestic wastes under natural processes is called
Industrial pollution
Thermal pollution
Biodegradable pollution
Nonbiodegradable pollution
19222.Which one of the following is not normally a pollutant?
Carbon monoxide
Carbon dioxide
Hydrocarbons
Sulphur dioxide
19224.Ultraviolet radiation from sunlight causes the reaction that produces
Fluorides
Ozone
Carbon monoxide
Sulphur dioxide
19226.Contamination of water with sewage is indicated by cysts of
Escherichia
Escherichia coli
Pseudomonas
Leishmania