Solved question paper for CHEMISTRY Dec-2023 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry Dec-2023
PTU • B-TECH • Mechanical Engineering • 1st-2nd • Dec-2023
engineering chemistry previous year question papers on BRpaper are organized for students of Punjab Technical University’s Bachelor of Technology program, 1st-2nd semester. This section makes it easier to browse subject-wise old question papers for engineering chemistry, so students can review how questions are typically framed in past exams and get a sense of the exam pattern. Many students search for engineering chemistry previous year question paper while preparing for exams, and this page is built to support exactly that kind of subject-wise browsing and revision. BRpaper is not the official website of Punjab Technical University or any institution, and it does not publish official notices or academic updates.
PART A
1. Spectroscopy and its Applications:
An introduction UV/Visible Spectroscopy: Selection rules; Line widths and intensity of spectral lines; Principle and instrumentation; Electronic Transitions; Chromophores & auxochromes; Factors affecting λMax & intensity of spectral lines; Franck-Condon principle; Applications. IR Spectroscopy: Principle and instrumentation; Vibrational frequency; Fundamental modes of vibrations and types; Anharmonics; Factors affecting vibrational frequency; Applications. NMR Spectroscopy: Principle & instrumentation; Chemical shift; Spin-Spin Splitting; High-resolution NMR spectrum (PMR only). (7)
2. Photochemistry:
Introduction; Photo-physical & photochemical processes; Light sources in photochemistry; Beer-Lambert Law; Laws of Photochemistry; Quantum yield (primary and overall); Primary and secondary photochemical reactions; Jablonski diagram; Semiconductor photochemistry, Photovoltaic cells, Introduction to optical sensors, Introduction to supra-molecular photochemistry. (5)
3. Water and its Treatment:
Boiler feed water: Specification, Scales and sludge fermentation; Priming & foaming; Different methods of the water purifications and softening; Desalination of water; Water for domestic use: Specification; Disinfection of water.
4. Green Chemistry and its Applications:
Introductory overview - Definition and concepts of Green chemistry; Emergence of Green chemistry; Twelve principles of Green Chemistry with emphasis on the use of alternative feedstock (biofuels); Use of innocuous reagents in natural processes; Alternative solvents; Design of the safer chemicals; Designing alternative reaction methodology. Microwave and ultrasonic radiation in Green synthesis - Minimizing energy consumption. (4)
PART B
5. Corrosion and its Prevention:
Introduction; Different types of corrosion - Wet and Dry corrosion; Different types of surface films; Mechanisms of wet corrosion; Galvanic corrosion; Galvanic Series; Concentration cell corrosion and differential aeration corrosion; Soil and microbial corrosions; waterline, stress corrosions; Various methods of corrosion control. (5)
6. Polymers and Reinforced Composites:
Introduction; Functionality; Types of polymerization; Specific features of polymers; Structures - regularity and irregularity; Tacticity of polymers; Average molecular weights and size; Determination of molecular weight by number average method; Effect of molecular weight on the properties of polymers; Introduction to polymer reinforced composite. (5)
7. Nanochemistry:
Introduction; Materials self-assembly; Molecular vs. materials self-assembly; Self-assembling materials; Two-dimensional assemblies; Mesoscale self-assembly; Coercing colloids; Nanocrystals; Supramolecular structures; Nanoscale materials; Future perspectives. (5)
8. Petrochemicals:
Introduction; First, second & third generation petrochemicals; Primary Raw Materials for Petrochemicals. Natural gas: Natural gas treatment processes; Natural gas liquids; Properties of natural gas; Crude oil: Composition of crude oil- Hydrocarbon compounds; Non-hydrocarbon compounds; Metallic Compounds, Crude oil classification; Physical separation processes; Conversion processes; Production of ethylene and propylene
Solved Questions
Solved-
Define the line width and intensity of spectral line.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Explain the term semiconductors with examples.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Define Green chemistry.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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May 2020 Explain any two principles of Green Chemistry with the help of examples.
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May 2019 Write in brief about emergence of Green Chemistry.
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May 2017
Define Green Chemistry. What are its applications?
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May 2016 Define Green Chemistry. Explain the differences between traditional approach to reduce pollution and the Green chemistry approach.
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May 2015 What do you mean by green chemistry? Briefly explain atom economy.
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Dec 2014 Explain any three principles of green chemistry with examples.
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May 2013 Explain Green chemistry and its concepts.
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May 2012 What is Green Chemistry? Why is it called so?
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Dec 2011 Define Green Chemistry.
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Explain the term nanoscale.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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What are the primary raw materials?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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What do you mean by first generation petrochemicals?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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May 2023 a) Discuss the first, second and third generation petrochemicals.
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May 2018
What are petrochemicals?
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Dec 2017
What is meant by first, second and third generation petrochemicals?
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Dec 2016 What are third generation petrochemicals?
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May 2014 Discuss various generations of petrochemicals.
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Dec 2011 What are third generation petrochemicals?
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What are rules for molecules show IR activity?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Dec 2019 What is the essential condition for a molecule to be IR active?
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Dec 2018
What is the essential condition for a molecule to be IR active?
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May 2013 What is the essential requirement for the compound to be IR active? Discuss the applications of IR spectroscopy.
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May 2012 What happens on absorption of IR radiation by the molecule?
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Define the Primary photochemical reactions.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Dec 2023 Difference between Primary and Secondary photochemical reactions.
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Dec 2012 Explain primary and secondary photochemical processes.
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Define the bathochromic shift.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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What are optical sensors?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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May 2015 What are Optical Sensors?
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May 2013 What are optical sensors?
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Dec 2012 What are optical sensors?
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Explain the electronic transitions.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Explain the Spin-Spin coupling.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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May 2013 What information can be obtained from spin-spin coupling?
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Dec 2010 What do you understand by spin-spin coupling?
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May 2007 Write brief notes on spin-spin coupling.
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Dec 2007 Write brief note on spin-spin coupling.
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Dec 2006 Write brief notes on Spin-spin coupling.
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Explain the Tacticity of Polymers.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Dec 2018 What do you understand by tacticity? How can it affect the properties of polymers?
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Dec 2017
What is meant by tacticity of polymers?
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May 2016 How polymers are classified on the basis of tacticity?
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Dec 2016 What do you understand by tacticity? How it can affect the properties of polymers?
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May 2015 What are atactic polymers?
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Dec 2011 What do you understand by tacticity in polymers? Explain different types.
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Explain the self-assembling materials.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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May 2020 What are self assembling materials?
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Dec 2017
Describe in details "materials self-assembly".
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May 2016 What is self-assembly?
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May 2013 Explain self assembling materials and two dimensional assemblies.
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Dec 2012 What do you understand by self-assembling materials? Explain.
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Difference between Primary and Secondary photochemical reactions.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Dec 2023 Define the Primary photochemical reactions.
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Dec 2012 Explain primary and secondary photochemical processes.
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What are the applications of IR spectroscopy?Long Answer 8 Marks Dec-2023 • PTU B-TECH
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May 2013 Discuss the principles of IR Spectroscopy.
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May 2012 Discuss IR spectroscopy and its applications.
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Dec 2012 Discuss the applications of IR spectroscopy.
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May 2011 Give the scope of IR spectroscopy.
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Explain the Natural Gas treatment Processes.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Dec 2019 Discuss in detail the natural gas treatment processes and conversion processes.
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May 2016 Discuss briefly the natural gas treatment processes. Illustrate with the help of diagram.
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Dec 2016 Explain natural gas treatment processes.
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May 2013 Explain natural gas treatment processes.
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Dec 2011 Discuss natural gas. Discuss its treatment processes.
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Determination of molecular weight using number average method.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Answers about this subject, solved papers, and preparation.
01 Where can I find engineering chemistry previous year question papers for Bachelor of Technology, 1st-2nd semester?
This page lists engineering chemistry question papers uploaded for Punjab Technical University Bachelor of Technology, 1st-2nd semester, organized for subject-wise browsing where available.
02 Are these official Punjab Technical University question papers?
BRpaper is not the official website of Punjab Technical University. These papers are shared for reference and revision purposes only and are not official university material.
03 How can previous year engineering chemistry papers help in exam preparation?
Reviewing past papers can help you understand how questions are typically framed, notice commonly repeated topics, and get a sense of the exam pattern before your own exam.
04 What kind of topics does engineering chemistry usually cover?
The question papers here relate to the official engineering chemistry syllabus set by the university for this course and semester.
05 Does this page include a engineering chemistry previous year question paper or solved answers?
This page focuses on providing access to the previous year question papers themselves. A separate question bank or solved answers may not be available for every paper.
06 Can I find papers for other subjects in the same Bachelor of Technology?
Yes, BRpaper organizes papers by university, course, stream, and semester, so you can browse other subjects within the same Punjab Technical University Bachelor of Technology.