Download DBATU B.Tech 2019 Oct-Nov Chemical Engineering-CHEM 3rd Sem Mass Transfer Operation I Question Paper

Download DBATU (Dr. Babasaheb Ambedkar Technological University) B Tech 2019 Oct-Nov (Bachelor of Technology) Chemical Engineering-CHEM 3rd Sem Mass Transfer Operation I Question Paper

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DR. BABASAHEB AMBEDKAR TECHNOLOGICAL UNIVERSITY, LQNERE
? Mid Semester Examination ? Oct 2019
Course: B. Tech in - Chemical I ? Sem: III ?
Subject Name: Mass Transfer Operation-I Subject Code: BTCHC 502
Max Marks: 20 Date? 24? 09/9/91 11 Duration:- 1 Hr.
I . Instructions to the Students:
1. All questions are compulsory.
5. Question one are compulsory.
6. Solve any two from question 2 and solve any one from question 3.
7. Assume suitable datawherever required.
\ Q 1 , Attempt following Questions. ? (Level/CO) Marks
? ' 1. Ordinary diffusion process is also called I diffusion. A) pressure b) Evaluation 6
thermal 0) concentration d) forced _
? ' 2 Schmidt number is given by---?-- a) ?3 39? b) Re. Pe c) Sh x Fe (1) Re/Pe Apphcatm?
' - 3. The reciprocal of stripping factor IS termed as a) selectivity index b) relative Analysis
volatility 0) absorption factor d) Murphree ef?ciency .
. 4. (NRe . NSC) IS termed in mass transfer operation as the number a) Remember
Stanton b) Sherwood c) Peclet d) none of these i I ?
5. The partial pressure distribution of an ideal gas diffusing through another Understand
stagnant ideal gas at steady state follows a/ an law a) exponential b)
parabolic c) linear (1) cubic ? V
, 6. Mass transfer co-ef?cient (K) and diffusivity (D) are related according to film . Understand
' theoryasa)KocDb)KocD05c)K0" ' ?7 Q.2 Solve Any Two of the following. ? 3 X 2
1' j (A)? 'What 1s process to Choose solvent for Absorption operation? \ Remember
_ . (B) Derive JA = -JB . ? Understand
1i, ? KC) Explain term Cascade with their types. V ? Application. 1
i ? . Q. 3 Solve Any One of the following. i V ? ? v 8
g (A) Derive Material Balance Equation for countercurrent ?ow Absorption Operation Application.
.1 (B) Oxygen (A) is diffusing through carbon monoxide (B).under steady state conditions with Evaluation
3 carbon monoxide non diffusing. The total pressure is l * 105 N/m2 and temperature 0?C. 1
The partial pressure of oxygen at two planes 2mm apart is respectively, 13000 and 6500
. 6 NM? The diffusivity for the mixture is 137 * 10's mzls. Calculate the rate of dif?JSion of .
Oxygen in Kmol/s through each square meter of two planes.
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This post was last modified on 21 January 2020