West Bengal Institute of Technology (WBIT) 2009-4th Sem B.C.A Computer Application - HU401 Environment and Ecology ( ) - Question Paper
Name :..................................................................
Roll No. :.................................................................
Invigilators Signature : ........................................
CS/BCA/SEM-4/HU(BCA)-401 /2010 2010
Time Allotted : 3 Hours Full Mark? : 70
Thefigures In the margin indicatefull marks.
Candidates are required to give their answers in their own words
as far as practicable.
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GROUP r- A ( Multiple Choice Type Questions )
1. Choose the correct alternatives for any ten of the following : 10x 1 = 10
i) Which of the following acids is present in normal rain ?
a) Carbonic acid b) Sulphuric acid
c) Hydrocarbonic acid d) Nitric acid.
ii) Trickling filter is used under .
a) Primary treatment b) Secondary treatment
c) Tertiary treatment d) Advanced treatment.
iii) El Nino is natural phenomenon that is observed on
a) Indian ocean b) Bay of Bengal
. ( .
c) Pacific ocean d) All of these.
iv) . Which one of the following is biotic factor of ecosystem ?
a) Solar energy b) Temperature
c) Soil d) Consumer.
v) Bhopal gas tragedy happened on
a) 3rd December, 1986 b) 3rd December, 1984 c) 3rd June, 1986 d) 3rd June, 1984.
vi) Tinnitus is a disease caused by
a)- Air pollution b) Water pollution
c) Land pollution d) Noise pollution. -
vii) Identify the cause of eutrophication :
a) Increase of pathogen
b) Increase of COD
c) Increase of algae productivity
d) Increase of DO.
.viii) Lithosphere consist of
a) Earths crust, mantle and core
b) soil and rock
c) only soil
d) magma and soil.
ix) The World Environment Day is celebrated on
a) 4th January b) 5th June c) 12th December d) 15th June.
x) Greenhouse effect is caused by
a) CO
c) S02 .
b) C02
d) N2.
xi) Long distance radio communication is possible due to presence of
. ' ' ' . '{ ' . ( ' -a) Troposphere b) Stratosphere
c) Thermosphere d) Exosphere,
xii) Stone cancer of Taj Mahal is caused by a) Acid rain b) Smog c) UV ray d) CFC.
GROUP-B (Short Answer Type Questions )
Answer any three of the following. 3x5= 15 Define and classify the biotic components of ecosystem.
2.
3.
4.
5.
6.
What is ecological pyramid ? Give suitable example.
Define Global warming. State how the greenhouse gases cause global warming.
Highlight the impact of noise pollution on human health.
Draw a Schematic diagram of waste water treatment.
GROUP -C ( Long Answer Type Questions )
Answer any three of the following. 3x15 = 45
7.
a) How are the pollutants dispersed in the form of smoke from the chimney of industries ? Whip and why was the
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Green Bench setup ?
b) State the role of NGOs in environmental protection.
( 7 + 3 ) + 5
CS / BCA / SEM-4 / HU(BCA)-401 /2010
. . . - > .
8. State the impact of C02 on global warming. Explain the
effect of CO on human health. What sure primary & secondary
pollutants ? Explain how primary pollutant is transformed
into secondary pollutant. 4 + 6 + 2 + 3
' f.
9. What do you mean by eutrophication ? Explain with the help
of diagram, the three-stage sewage treatment. What is hydrosphere ? Mention the major sources of ground water pollution. 3 + 5 + 3 + 4
10. What is Chipko Movement ? Give an explanation on Chipko Movement. State the impact of this movement in Indian society. 2+10+3
11. Write notes on any three of the following : 3x5
i) Pollution Control Board of India
ii) Stockhome Conference, 1972
iii) Ganga Action Plan
iv) Ozone layer depletion
v) Bio-diversity.
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| Earning: Approval pending. |
