Q.1
14 Marks(a)
Define alkylation and give one industrial example.
(b)
List environmental issues in chemical manufacturing.
(c)
State the need for process optimization in chemical industries.
Gujarat Technological UniversitySummer 2026 examination
GTU 3140508 Unit Processes & Chemical Technology Summer 2026 Question Paper & PDF
B.E. · Chemical Engineering · Semester 4 · Subject code 3140508
- 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)
State the difference between alkylation and acylation.
(b)
Differentiate between mercury cell and diaphragm cell.
(c)
Describe the DCDA process for the manufacture of sulfuric acid.
OR
(c)
Explain the process of H-acid manufacture with flow diagram, reactions, and environmental considerations.
Q.3
14 Marks(a)
Explain the mechanism of nitration of benzene.
(b)
Explain the manufacturing of Portland cement in detail with chemical reactions and flow diagram.
(c)
Explain the membrane cell process for caustic soda manufacture with neat flow sheet
OR
(a)
List any three important uses of sulfuric acid.
(b)
Explain the preparation of sodium bicarbonate using Solvay process with flow diagram.
(c)
Explain the fermentation process for citric acid manufacture with reactions, process flow diagram, and applications.
Q.4
14 Marks(a)
What are the raw materials used in the manufacture of ammonia?
(b)
Provide flow diagram and reactions required in the manufacturing of urea from ammonia and carbon dioxide
(c)
Describe Ostwald’s process for nitric acid manufacture with process flow sheet, reactions, and efficiency factors.
OR
(a)
Define and classify fertilizers with examples.
(b)
Classify dyes based on their mode of application.
(c)
Discuss in detail the manufacture of aspirin – raw materials, reactions, process steps, and applications.
Q.5
14 Marks(a)
Differentiate between wet and dry process for cement manufacture.
(b)
List the major vitamins and their sources.
(c)
Explain the cracking process in petroleum refinery with types, mechanisms, and industrial significance.
OR
(a)
List the properties of good quality paper.
(b)
Explain the Kraft process for pulp manufacture.
(c)
Discuss polymerization reactions (addition and condensation) with mechanisms and industrial applications.
More Unit Processes & Chemical Technology papers
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Other Semester 4 subjects
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About this paper
Official Gujarat Technological University (GTU) examination paper for Unit Processes & Chemical Technology (Summer 2026, B.E. · Chemical Engineering, Sem 4). 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.