Jawaharlal Nehru Technological University Kakinada 2009-1st Year B.Tech Chemical Engineering INTRODUCTION TO , - Question Paper

Code No: Y0821/R07 Set No. 3
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. explain briefly:
(a) Flotation
(b) Screening. [2×8=16]
2. provide details about humidity and saturation. [16]
3. (a) Differentiate ranging from pseudo-plastic and Dilatant fluids with suitable example.
(b) elaborate the time dependent fluids and discuss with suitable examples.
(c) Write salient points of 1 dimensional flow. [6+6+4]
4. Write about kinds of evaporators in details. [16]
5. (a) elaborate 3 main issues that exists when a gas and liquid flow through
a packed bed? explain indetail about their effect on mass transfer and suggest
ways of studying them.
(b) Write overall mole balance at steady state for designing a packed absorption
column, and discuss the terms involved. [9+7]
6. discuss briefly:
(a) Venturi scrubber
(b) Spray column. [8+8]
7. (a) Write short notes on selection of liquid-liquid contactors.
(b) Write short notes on selection of disperse phase. [8+8]
8. (a) describe molecularity, order and rate of a reaction.
(b) Distinguish ranging from elementary and non elementary reactions with suitable
examples. [9+7]

Earning:   Approval pending.