(a) What is water pollution ? Name two ways by which oxygen reaches water
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1
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1242
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August 14, 2016
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What is the difference between pollutants and contaminant?
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0
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6366
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August 14, 2016
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How can domestic waste be used as manure?
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0
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1631
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August 14, 2016
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A large number of fish are suddenly found floating dead on a lake. There is no evidence of toxic dumping but you find an abundance of phytoplankton? ( Suggest a reason for the fish kill?
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0
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938
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August 14, 2016
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What are the main advantages of using green chemistry?
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0
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578
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August 14, 2016
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Give three examples in which green chemistry has been applied
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0
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1612
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August 14, 2016
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What should be the tolerable limit of fluoride ions in drinking water ? What happens if it is more than 10 ppm?
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0
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741
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August 14, 2016
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Name any four methods of waste management
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0
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1555
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August 14, 2016
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Name two herbicides used to kill weeds
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0
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467
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August 14, 2016
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What do you mean by Biochemical Oxygen Demand (BOD)?
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0
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5471
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August 14, 2016
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What are the harmful effects of photochemical smog and how can they be controlled?
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0
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4550
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August 14, 2016
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What is the difference London smog and photochemical smog?
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1
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11690
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August 14, 2016
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Write down the reactions involved during the formation of photochemical smog
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0
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4503
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August 14, 2016
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Write short noes on :
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1
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466
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August 14, 2016
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Write down the chemical equations of reaction involved during the formation of photochemical smog?How can it be controlled?
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0
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5608
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August 14, 2016
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What are pesticides and herbicides ? Explain giving examples
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0
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2137
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August 14, 2016
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What do you mean by ozone hole ? What are its consequences?
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0
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7201
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August 14, 2016
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What are the reactions involved for ozone layer depletion in the stratosphere?
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0
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9351
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August 14, 2016
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What would have happened if the green house gases were totally missing in the earth's atmosphere. Discuss
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0
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2406
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August 14, 2016
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Carbon monoxide gas is more dangerous than carbon dioxide. Why?
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0
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1159
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August 14, 2016
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What is troposphere?
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0
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499
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August 14, 2016
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In which season and what time of day, there is photochemical smog?
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0
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543
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August 14, 2016
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Which main compounds are causing damage in ozone layer?
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0
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597
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August 14, 2016
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What are polar stratospherical clouds (PSC)?
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0
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569
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August 14, 2016
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Which disease is caused due to hole in ozone layer and why?
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0
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517
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August 14, 2016
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What type of aromatic compounds are present as particulates in air?
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0
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1291
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August 14, 2016
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Which zone is called ozonosphere?
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0
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871
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August 14, 2016
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What is the composition of photochemical smog?
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0
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986
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August 14, 2016
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What is the nature of London smog?
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0
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1083
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August 14, 2016
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Name two important sinks of C${{O}_{2}}$
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0
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509
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August 14, 2016
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