Manipal University 2008 B.E Civil Engineering SIXTH SEMESTER SUB%3AAIR POLLUTION - Question Paper

Manipal - 576 104.

SIXTH SEMESTER B.E END SEMESTER EXAMINATION MAY- 2008

AIR POLLUTION (Elective) (CIE - 306.3)

(Revised Credit System)

-S-2008

TIME: 3 HRS.]    [MAX. MARKS: 50

Note:. Answer any FIVE FULL questions.

Q.1 (a) Define air pollution. Classify air pollutants into different categories, indicating their sources

(b). Distinguish between:

(i)    Primary and secondary air pollutants

(ii)    Stationary and mobile sources of air pollutants

(5+5=10 marks)

Q2. (a) Explain causes and effects of inversion of atmosphere

(b) Define wind rose* Explain the importance of wind roses in air pollution studies    (5+5=10 marks)

Q3 (a).Explain the following terms with respect to leaf damage due to air pollutants:

(i) Necrosis (ii) Chlorosis (iii) Abscission and (iv) Epinasty

(b) Write short notes on

(i)    Time concentration equation

(ii)    Leaf destruction in relation to yield    (4+6=10 marks)

Q4.Explain various methods of sampling air pollutants (10 marks) Q5.(a) What are the sources of smoke

(b) Explain the principle, construction and uses of the Ringle mann chart for smoke measurement    (4+6=10 marks)

06. (a) Write short note on-

(i)    Exhaust emission

(ii)    Crank case emission

(iii)    Evaporative emission

(b) Explain different parameters generally used for calculating air pollution index.    (6+4=10 marks)

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