Download SGBAU BSc 2019 Summer 4th Sem Environmental Science Environmental Pollution Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 4th Sem Environmental Science Environmental Pollution Previous Question Paper

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B.Sc. (Part?II) Semester?IV Examination
ENVIRONMENTAL SCI ENCE
(Environmental Pollution)
Time : Three I iours] [Maximum Marks : 80
Note :~ ?All questions are compulsory and questions 2 to 7 carry equal marks.
1. (A) Fill in the blanks : 2
(a) Unwanted sound is called __~_7 -__._ _ . '/2
(b) ____ __ gas protects life from UV rays. V:
(c) Combination of smoke and fog in atmosphere is called W, __ -7 '/2
(d) is major green house gas. V:
(B) Choose correct option :
(c) A gas associated with Bhopal Gas tragedy is ___, ,___V . 'x?i
(i) MIC (ii) CO
(iii) PAN (iv) 03
(f) _-_ '_ is unit for noise. V2
0) pm (ii) dB
(iii) RAD (iv) S'l '/2
(g) 7 7___ . is ionizing radiation. '/2
(1) r (ii) microwave
(iii) IR (iv) Visible
(h) _ 7_ is unit for conductivity. '4
(i) S"1 (ii) Q
(iii) cm3 (iv) a
(C) Answer in one sentence each :?
(i) What is 3PM}- 1
(j) What is the l?ng form of CFCS ? 1
(k) De?ne acid rain. 1
(1) De?ne aerosols. 1
2. (a) Describe various categories of air pollutants. 4
(b) De?ne air pollution and give composition of normal air. 4
(0) Explain effects ofNOx on human beings. 4
OR
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(d)
(e)
4)
A
10
?1
(i)
(k)
(1)
With thc help nf suitable cxamplc explain :ccondary air po?utanl.
Explain natural sources ofnir pollutants.
Explain reactions 0590: in atmosphere and resultant effect.
Explain any two qualit} chunctcristics Of?water.
Dcscribc factors affectir g gm und water pollution.
Explain various sources (uINwil pollulants in sea water.
OR
Describe physical cffects ol'oil in wnlcr.
Explain effects ofdomeslic 5? \mgc on Environment.
Explain effects 0f thcrmai pull?uion.
Discuss how Agricultural wastes. urban wastes and industrial wastes ale polluting soil.
()R
Discuss any three typical Soil pollutants and hum soil pollution can be controlled.
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(m)
(n)
(0)
(p)
(q)
(l)
(U)
(V)
(W)
(X)
Explain industrial misc and transpon noise.
Explain the concept ol??F?oductinn ol'noisc 31 Source" with suitable example.
Describe any two physiolngicu? c?'ccts ol'noisc on human.
0R
Suggest any two control measures to control traf?c noise.
Explain any two psychological effects ofnoisc on human being.
Explain decibcl along with various threshold limit values.
With the help ol?suilable rmcticn explain nuclcar ?ssion and is app ications.
Describe early radioactive ?allml.
Fxplain any two sourccs ofrudimons with typical radiations and i1: control.
OR
Explain mechanism ofimer.1clim oi?ionj/ing radiations 10 living thing.
Explain mechanism 01'dclaycd radioactix e fallout.
Describe curie and rad us rudiatinn units.
7. Discuss causes, mechanism, effects and control measure for green house :ffecl.
OR
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De?ne thermochemical and phmochcm ca! smog. Explain causes. mechanism zmd effect of?sulphur
smog.
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89 ?I
12
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