Jawaharlal Nehru Technological University Kakinada 2009 B.Tech Chemical Engineering Introduction to - exam paper

I B.Tech Supplementary Examinations, November 2009
INTRODUCTION TO CHEMICAL ENGINEERING
(Chemical Engineering)
Time: three hours Max Marks: 80
ans any 5 ques.
All ques. carry equal marks



1. (a) What is the role of chemical engineer in food processing industry.
(b) discuss briefly ideal solution.
(c) Write short notes on flotation. [6+4+6]
2. (a) describe heat capacity and discuss how to compute mean heat capacity for
gases.
(b) Differentiate ranging from Cp and Cv and also write the relation ranging from these two
for ideal gases.
(c) Write short notes on equivalent mass. [6+6+4]
3. (a) define the boundary layer formation on a flat plate for a fluid stream.
(b) State and discuss the formula of continuity. [12+4]
4. (a) discuss the mechanism of heat transfer by conduction, convection and radia-
tion.
(b) Write the formula for the rate of heat flow by conduction. discuss the terms
in it?
(c) Write brief note on conductivities of solids, liquids and gases. [6+4+6]
5. (a) discuss mass transfer coefficient in terms of film coefficient.
(b) explain about the flux formula for diffusion in gases and diffusion in liquids.
[16]
6. (a) discuss with the help of suitable equations how to estimate the vapour and
liquid composition for flash distillation.
(b) How many ways the azeotropes are classified and how to separate them. [8+8]
7. (a) Write short notes on the fields of applications of liquid-liquid extraction.
(b) In a ternary extraction system, elaborate the solute, solvent, and carrier?
(c) What you understand about solute and raffinate?
(d) describe and discuss distribution coefficient. [4+4+4+4]
8. (a) discuss briefly adsorption equipment.
(b) Write expressions for Freundlich and Langmuir isotherms. [16]

Earning:   Approval pending.