Chemical Engineering Answers

Which of the following is false?

a) In incineration process bacterial growth is fixed on the media

b) In activated sludge systein bacterial growth is suspended as a dispersed floc. c) Microstrainer is used in the advanced waste water treatment process to

remove suspended solids.

d) None of the above

8.Alkalinity of waste water due to the presence of ....... a) Bicarbonates b) Carbonates c) hydroxides of metal ions

d) all of the above

7. Negative lapse rate is called as.....? a) ELR b) INVERSION c) WALR d) DALR

6. What is the Dry adiabatic lapse rate value? a) 6.5°C b) 5°C. c)10°C

5)Define the terms primary and secondary air pollutant with the suitable examples?

4.For buoyant plumes the temperature difference equal to ........ a) 50 b) ≥ 50 c) ≤ 50 d) >50

3.Carbon monoxide (CO) is present in standard atmospheric air at a concentration of 50 ppm. Air density 1.185 kg/m and molecular weight is 28. Then what is the mass volume concentration (in micro grams /m') in the atmosphere? ( a) 12761

b) 79142 c) 28513 d) 57260

2.Define the term Effective stack height?

1.What is the relation between biosphere and ecosystem?

6) Evaluate ∮c ze^{z)/(z-1)²(z²+4) dZ,Where C is |z-1|=1 by using Cauchy integral formula for derivatives.