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(a) What is water pollution ? Name two ways by which oxygen reaches water
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1
|
1206
|
August 14, 2016
|
|
What is the difference between pollutants and contaminant?
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0
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6038
|
August 14, 2016
|
|
How can domestic waste be used as manure?
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0
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1598
|
August 14, 2016
|
|
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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897
|
August 14, 2016
|
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What are the main advantages of using green chemistry?
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0
|
547
|
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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1564
|
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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713
|
August 14, 2016
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Name any four methods of waste management
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0
|
1527
|
August 14, 2016
|
|
Name two herbicides used to kill weeds
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0
|
438
|
August 14, 2016
|
|
What do you mean by Biochemical Oxygen Demand (BOD)?
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0
|
5431
|
August 14, 2016
|
|
What are the harmful effects of photochemical smog and how can they be controlled?
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0
|
4494
|
August 14, 2016
|
|
What is the difference London smog and photochemical smog?
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1
|
11450
|
August 14, 2016
|
|
Write down the reactions involved during the formation of photochemical smog
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0
|
4410
|
August 14, 2016
|
|
Write short noes on :
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|
1
|
435
|
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
|
5218
|
August 14, 2016
|
|
What are pesticides and herbicides ? Explain giving examples
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0
|
2099
|
August 14, 2016
|
|
What do you mean by ozone hole ? What are its consequences?
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0
|
7150
|
August 14, 2016
|
|
What are the reactions involved for ozone layer depletion in the stratosphere?
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0
|
9129
|
August 14, 2016
|
|
What would have happened if the green house gases were totally missing in the earth's atmosphere. Discuss
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0
|
2358
|
August 14, 2016
|
|
Carbon monoxide gas is more dangerous than carbon dioxide. Why?
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0
|
1125
|
August 14, 2016
|
|
What is troposphere?
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0
|
467
|
August 14, 2016
|
|
In which season and what time of day, there is photochemical smog?
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0
|
506
|
August 14, 2016
|
|
Which main compounds are causing damage in ozone layer?
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|
0
|
571
|
August 14, 2016
|
|
What are polar stratospherical clouds (PSC)?
|
|
0
|
529
|
August 14, 2016
|
|
Which disease is caused due to hole in ozone layer and why?
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0
|
476
|
August 14, 2016
|
|
What type of aromatic compounds are present as particulates in air?
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0
|
1260
|
August 14, 2016
|
|
Which zone is called ozonosphere?
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0
|
834
|
August 14, 2016
|
|
What is the composition of photochemical smog?
|
|
0
|
958
|
August 14, 2016
|
|
What is the nature of London smog?
|
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0
|
1045
|
August 14, 2016
|
|
Name two important sinks of C${{O}_{2}}$
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0
|
475
|
August 14, 2016
|