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Gujarat Technological UniversitySummer 2023 Examination

GTU 3110001 Chemistry Summer 2023 Paper Solution & PDF

B.E. · Common Engineering · Semester 1 · Subject Code: 3110001
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Total Marks70 MarksExternal theory exam
Passing Marks23 Marks33% minimum cutoff
Exam Duration2.5 Hours10:30 AM – 1:00 PM
Paper Structure5 QuestionsWith internal OR choices
Jump toQ1Q2Q3Q4Q5

Question 1

14 MarksMedium
(a)

Discuss periodic trend of Ionization enthalpy. Why ∆iH1<∆iH2<∆iH3 for an atom?

3 Marks
(b)
Write a short note on priming and foaming.
4 Marks
(c)

Explain how corrosion control can be brought about by the cathodic protection. Explain mechanism of electrochemical corrosion.

7 Marks

Question 2

14 MarksMedium
(a)

What do you understand by hardness of water? Discuss types of hardnes.

3 Marks
(b)
Define monomer, polymerization, oligomer and heavy polymer.
4 Marks
(c)

Explain the suitable method to analyze the percentage of moisture,volatile matter and ash content in a coal sample.

7 Marks
OR OPTION
(c)

What are alloys? Do you think alloys are better choice than pure metal for making of various tools? Justify your answer with the help of examples.

7 Marks

Question 3

14 MarksMedium
(a)
What are the allowed and forbidden transitions?
3 Marks
(b)

Give labelled schematic diagram for refining of petroleum by fractional distillation.

4 Marks
(c)

What are the characteristic of good fuels? Discuss octane and cetane number.

7 Marks
OR OPTION
(a)
Distinguish between absorption and emission spectra.
3 Marks
(b)
Discuss desalination of water.
4 Marks
(c)
Discuss mechanism of free radical polymerization.
7 Marks

Question 4

14 MarksMedium
(a)
Write any three applications of nanomaterial in textile industries.
3 Marks
(b)
State Lambert and Beer’s law and deduce its mathematical expression.
4 Marks
(c)

What is fermentation? Explain the fermentation processes for preparation of Ethanol.

7 Marks
OR OPTION
(a)
Discuss the applications of nanomaterial in textile industry.
3 Marks
(b)

Write any one specific application of following polymers-

aPolyvinyl chloride b. Glyptal c. Low density polyethened. High density polyethene
4 Marks
(c)

What is fermentation? Explain the fermentation processes for preparation of Acetic acid.

7 Marks

Question 5

14 MarksMedium
(a)
Write the any three advantages of bio-fertilizers over chemical fertilizers.
3 Marks
(b)
Write the application of nanomaterial in catalysis and medicine.
4 Marks
(c)

How would you find the equivalence point in Acid–Base titration by conductivity meter? Explain.

7 Marks
OR OPTION
(a)
What are enzymes? Mention their general characteristics.
3 Marks
(b)
Explain the bottom up method for synthesis of nano-materials.
4 Marks
(c)

What is spectroscopy? Write the application of UV-Visible and infra-red (IR) spectroscopy?

7 Marks
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About this Examination Paper & Attribution

Official Gujarat Technological University (GTU) examination paper and step-by-step solutions for Chemistry (Summer 2023, B.E. · Common Engineering, Sem 1). 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.

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