Mass Transfer-I Government Polytechnic 2010 Question Paper

Exam Board: Government Polytechnic
Question Paper Course: Diploma Hospital Management
Subject of Question Paper: Mass Transfer-I
Time allotted: 3 Hours
Max. Marks: 70
Year of the exam paper: 2010
Question Paper Format: Text

Q.1 Define the Terms :
1. Eddy diffusion 2.Cascade 3. Leaching 4. Molar flux 5.Concentration Gradient 6. Real Tray 7. Stage efficiency 14

Q.2 (a) What is Extraction? Discuss Industrial Application of Extraction 07
(b) Discuss effect of Temperature, Pressure and Concentration on Diffusion 07
OR
(b) Derive the equation JA = - JB 07

Q.3 (a) Derive equation for steady state diffusion of A through non diffusing B 08
(b) Explain Tray efficiency, Murphy efficiency and Overall efficiency 06
OR
Q.3 (a) Discuss Film theory and Surface renewal theory 08
(b) Explain In place Leaching and Heap Leaching 06

Q.4 (a) Nitrogen (A) is diffusing through oxygen (B) under a system pressure of 1.03 × 105 N/m2 and 298 k. The partial pressure of Nitrogen at two planes 5.2 mm apart is 13500 and 6200 N/m2. If the diffusivity of the mixture under this condition is 1.35 × 10-5 m2/s. Calculate the molar flux of
Nitrogen. Oxygen is non diffusing 10
(b) Differentiate Molecular Vs. Eddy diffusion 04

Q.5 Explain With neat sketch in detail 14
1. Centrifugal Extractor 2. Mixer and Settler
OR
Q.5 Explain With neat sketch in detail 14
1. Boll man Extractor 2. Shank system 

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