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2003 Course Environmental Eng. (Elective I)

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Total No. of Questions : 12] P1125 [Total No. of Pages : 3 [3664]-276 B.E. (Chemical) ENVIRONMENTAL ENGINEERING (Elective - I) (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions : 1) Answer any three questions from each section. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Your answers will be valued as a whole. 6) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 7) Assume suitable data, if necessary. SECTION - I Q1) a) b) Discuss about hydrological cycle. [8] The exhaust gas from a motor vehicle shows CO concentration of 2 o percent by volume. What is the concentration of CO in mg/m3 at 0 C and 1 atm. [8] OR Q2) A capacitive power plant of MW with 40% thermal efficiency is to be designed which will use residual oil with 1% sulphur content. The emission factors for burning 1m3 of oil are : particulates = 1 kg, NO2 = 10 kg and SO2 = 16 S kg. Where S is the % sulphur content of oil. What are the rates of emission of particulates NO2 and SO2 to the atmosphere if no control devices are provided. The heating value of oil is 8000 KCal/kg and its density may be taken as [16] 950 kg/m3. Q3) a) b) Q4) a) b) Discuss about types of Plumes. Give the types of inversion. [8] [8] OR Write briefly about air quality modeling. [8] One model of the atmosphere assumes a constant density. Find the lapse rate for the atmosphere and indicate whether this is stable or unstable case. Assume that the atmosphere obeys perfect gas law. [8] P.T.O.

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