Q.1
14 Marks(a)
Describe the concept of Flash Distillation.
(b)
Discuss importance of vacuum distillation.
(c)
Discuss positive deviations from ideality with neat sketch.
Gujarat Technological UniversitySummer 2025 examination
GTU 3160501 Mass Transfer Operations II Summer 2025 Question Paper & PDF
B.E. · Chemical Engineering · Semester 6 · Subject code 3160501
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 10:30 AM – 1:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
Define Reflux Ratio.
(b)
List assumptions of McCabe-Thiele method and its limitations.
(c)
Write a short note on Azeotrope.
OR
(c)
Explain Adsorption hysteresis with
Q.3
14 Marks(a)
Explain Extractive distillation.
(b)
Describe Azeotropic distillation briefly.
(c)
A gas (B)–benzene (A) mixture is saturated at 1 std atm, 50̊ C. Calculate the absolute humidity if B is (a) nitrogen and (b) carbon dioxide. Vapor pressure of nitrogen at 50°C is given as 0.362 std atm.
OR
(a)
Explain physical adsorption.
(b)
Classify rotary dryer and explain any one in brief.
(c)
Define:
1)Absolute humidity
2)Relative humidity
3)Dry-bulb
temperature
4)Wet-bulb temperature
5)Humid volume
6)Humid Heat
7)Lewis relation
Q.4
14 Marks(a)
Define Moisture content on wet basis and dry basis.
(b)
With neat sketch, explain drum dryer.
(c)
Why cooling towers are used in chemical process industries, give the classification and explain in detailed about cooling tower used in power plants.
OR
(a)
Explain Freeze Drying with application.
(b)
Explain:
i)Bound moisture
ii)Free moisture
iii)Equilibrium moisture
iv)Critical moisture
(c)
Write Freundlich equation. How is it applied to two-stage cross current adsorption?
Q.5
14 Marks(a)
Explain nature of adsorbents.
(b)
Explain rate of drying curve with neat diagram.
(c)
Write brief note on Pressure Swing Adsorption (PSA).
OR
(a)
Explain Vacuum drying with example.
(b)
Explain cross current adsorption.
(c)
What do you mean by Ion Exchange? Describe techniques and application of ion exchange and list out the factors on which rate of ion exchange is dependent.
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About this paper
Official Gujarat Technological University (GTU) examination paper for Mass Transfer Operations II (Summer 2025, B.E. · Chemical Engineering, Sem 6). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.