M.Sc. (Semester III) (CBCS) Examination Oct/Nov-2017
Environmental Science
ENVIRONMENTAL POLLUTION
Day Date: Thursday, 16-11-2017 Max. Marks: 70
Time: 02.30 PM to 05.00 PM
Instructions: Answer any Five Question.
All Questions carry equal marks.
Question No. 1 is Compulsory.
Attempt any two questions from Q.No.2, 3 and 4.
Attempt any two questions from Q.No.5, 6 and 7.
Q.1 Select the answer among the following. 14
Generally, photochemical smog is related to
Noise pollution Soil pollution
Water pollution Air pollution
Ozone layer in Stratosphere is affected mainly from
Low rainfall CFC content
Excess CO2 Excess CO
The noise created at the launching of space rocket measured around is

120 db 180 db
150 db 240 db
The Carbon monoxide mainly contributed from
Motor Vehicle Stationery fuel combustion
Industrial processes None of the above
In case of aquatic ecosystem the higher biomagnifications would be in

Fishes Birds
Zooplanktons Phytoplankton
The polluted water is defined by
Decreased turbidity
Increased Photosynthesis
Increased turbidity and de-oxygenation
Increased oxygenation
DDT is banned due to
Long persistence in the Environment
Highly toxic to human
None of the above
Used against mosquito killing
As per the WHO standards permissible limit of Iron in drinking water is

1 mg/I 1.5 mg/I
1.5 mg/I 2.5 mg/I
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SLR-MI-400
Which soil has the highest water holding capacity?
Sandy Soil
Clayey Soil
Loamy Soil
Mixture of Sands and Loam
10) The minimum allowable concentration of TDS in drinking water is
600 ppm 500 ppm
250 ppm 1000 ppm
11) Partially biodegradable plastic contains
Polyethylene and rubber Corn starch and Plastics
Cellulose and plastics Polystyrene with saw dust
12) Which of the following treatments are used in Composting and lagooning?
Filtration Sewage disposal
Sedimentation Sludge digestion
13) Find out the group of plants which is most resistant to ionizing radiations.
Coniferous forest Lichens and Mosses
Grasslands Mixed forest
14) The sustainable way to the disposal of biomedical waste
Incineration Land filling
Autoclaving Both and
Q.2 What is Air pollution? Elaborate the sources and effects in brief. 14
Q.3 Define Water pollution; explain the Water pollution monitoring procedures in
detail.
14
Q.4 Write in detail account on Types of soil pollution and discuss few remedial
techniques.
14
Q.5 Write a short notes on following: 14
Noise Exposure.
Drinking water quality standards.
Q.6 Write in with suitable illustration of the following: 14
Soil reclamation.
Biomedical waste toxicity.
Q.7 Write an account on the following: 14
Radiation exposure and health hazards.
Oil spill: Effects and control measures.