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Water Pollution Question Paper

Water Pollution 

Course:Bachelor Of Environmental Studies

Institution: Kenyatta University question papers

Exam Year:2009




KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2008/2009
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR
OF ENVIRONMENTAL SCIENCE
ENS 317: WATER POLLUTION

DATE: Tuesday 31st March, 2009 TIME: 8.00 a.m. – 10.00 a.m.


INSTRUCTIONS
Answer question one and any other three.
1.
(a)
Explain the term Potential Pollutant.


[5 marks]

(b)
Explain how the following cause pollution in surface water.
(i)
Oxygen
demanding
substances.
[3
marks]
(ii)
Temperature
Stratification
[3
marks]
(iii)
Waste
water
treatment
plants
[3
marks]
(iv)
Disease
causing
agents [3
marks]
(c)
Discuss the pathways of DDT as a pollutant and it’s effect on the
environment.
[8
marks]

2.
State the non-point sources of pollution and their pollutants. Explain the effects
of the pollutants and how the pollution from the sources can be minimized.










[15 marks]
3.
Discuss one technological method used to reduce surface water pollution.










[15 marks]
4.
Explain Thermal heat as a pollutant, and discuss ways to minimize the harmful
effects of excess heat on aquatic
ecosystems.
[15
marks]

5.
Explain what you would do to reduce your contribution to water pollution.










[15 marks]
……………………






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