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2003 Course Environmental Eng. (Elective I)

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Total No. of Questions : 12] [Total No. of Pages :4 [3864] - 325 B.E. (Chemical) ENVIRONMENTAL ENGINEERING (2003 Course) (Elective - I) P1263 Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Your answers will be valued as a whole. Use of logarithmic tables, slide ruler, Mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) b) c) d) Q2) a) b) c) Compare the conventional and high efficiency cyclones in terms of efficiency and dimensions. [4] State three adverse effects of population growth on environment. [3] Write expressions for the following. [3] i) Relationship between PPM and Volume concentration of pollutant. ii) Mass - volume concentration. Water is used in a spray chamber to treat standard air containing particles with a density of 1000 kg /m3 . The flow rate of air is 120 m3 /min and that of water is 0.3 m3 / min. The average drop size is 1000 m. The spray chamber has a diameter of 1m and a height of 3m. What is the overall collection efficiency of chamber if the average particle size is 2.5 m. The individual drop collection efficiency and the terminal velocity of drop are 9.0 % and 3.82 m/s respectively. [8] OR Classify air pollutants according to the source types. [6] Give the source and harmful effects on the human health on the particulate [6] pollution created by lead, nickel and mercury. Discuss source correction methods for control of pollution with suitable example. [6] P.T.O.

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