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mnsoomro
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In which of the following layer of atmosphere there is more thickness of ozone layer ?
A. troposphere B. stratosphere C. mesosphere D. photosphere Submitted by :- Jamil Ahmed
Which of the following is not a condition for the formation of smog ?
A. sufficient NO B. sunlight C. less movement of air D. winds Submitted by :- Jamil Ahmed
Acid present in acid rain may be__________________?
A. H2SO4 B. HNO3 C. both A and B D. none Submitted by :- Jamil Ahmed
Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing___________________?
A. NH2Cl B. NHCI2 C. NCI2 D. all of the above Submitted by :- Jamil Ahmed
Which of the following is not primary pollutant__________________?
A. SO3 B. CO C. NO D. H2SO4 Submitted by :- Jamil Ahmed
The yellow colour in photochemical smog is due to presence of_______?
A. dinitrogen oxide C.…
Major cause of SO2 on global scale is__________________?
A. volcanoes B. electric sparks C. combustion D. all Submitted by :- Jamil Ahmed
Which of the following is not a secondary pollutant_________________?
A. ozone B. carbonic acid C. sulphuric acid D. carbon dioxide Submitted by :- Jamil Ahmed
Pollutants have adverse effect over_________________?
A. Biosphere B. Ecosystem C. Both a & b D. Hydrosphere Submitted by :- Jamil Ahmed
The main product of bacterial action is_________________?
A. Nox B. NO2 C. N2O3 D. NO Submitted by :- Jamil Ahmed