Government Polytechnic 2010 Diploma in Hospital Management MassTransfer-1 - Question Paper

Q.1 describe 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? explain Industrial Application of Extraction 07
(b) explain effect of Temperature, Pressure and Concentration on Diffusion 07
OR
(b) Derive the formula JA = - JB 07
Q.3 (a) Derive formula for steady state diffusion of A through non diffusing B 08
(b) discuss Tray efficiency, Murphy efficiency and Overall efficiency 06
OR
Q.3 (a) explain Film theory and Surface renewal theory 08
(b) discuss 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 2 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. compute the molar flux of
Nitrogen. Oxygen is non diffusing
10
(b) Differentiate Molecular Vs. Eddy diffusion 04

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

Earning:   Approval pending.