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.
These Questions are downloaded from www.brpaper.com. You can also download previous years question papers of 10th and 12th (PSEB & CBSE), B-Tech, Diploma, BBA, BCA, MBA, MCA, M-Tech, PGDCA, B-Com, BSc-IT, MSC-IT.
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-
Write short notes on : (a) Define Degree of Freedom. How many Degrees of Freedom involved in triple point and eutectic point.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Write short notes on : (b) Distinguish between gross and net calorific value of a fuel.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Write short notes on : (c) Give the cause of corrosion.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Write short notes on : (d) What causes the temporary and permanent hardness of water?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Write short notes on : (e) What are the applications of polarography?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Write short notes on : (f) Differentiate thermosetting and thermoplastic polymers with suitable examples.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Write short notes on : (g) What are the main mechanisms of lubrication?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Write short notes on : (h) What do you understand by fermentation?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Write short notes on : (i) What are lipids and how is it essential for body function?Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Write short notes on : (j) Explain polydispersity index of a polymer.Very Short Answer 2 Marks Dec-2023 • PTU B-TECH
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Draw the phase diagram of one component water system.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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May 2013 Draw well labelled phase diagram of water. Describe in detail.
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Dec 2012 Draw well labelled phase diagram of water and explain.
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May 2010 Draw a neat labelled phase diagram of water system and explain areas, curves and triple points on it.
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What do you understand by wet and dry corrosion? How the corrosion can be prevented?Long Answer 8 Marks Dec-2023 • PTU B-TECH
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May 2022 What are the different methods of controlling corrosion? Explain sacrificial anodic protection method.
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May 2020 What are the various methods that need to be followed to control corrosion?
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Dec 2018 How corrosion can be prevented by proper designing?
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May 2014 What are the protective measures against corrosion? Discuss.
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What are fuels? Give complete classification of fuels with examples.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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What are the disadvantages of using hard water in boilers? Give an account of boiler trouble.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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May 2016 What are the major disadvantages of hard water when used for steam generation in boilers?
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Explain the principle and applications of thermo-gravimetric method.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Write a short notes on: a) CarbohydrateLong Answer 8 Marks Dec-2023 • PTU B-TECH
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Write a short notes on: b) Flavouring reagents of food.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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Define polymer. Describe the different types of polymers and their uses.Long Answer 8 Marks Dec-2023 • PTU B-TECH
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What do you understand by enzymes. How is it useful for the manufacture of ethanol and acetic acid by fermentation method?Long Answer 8 Marks Dec-2023 • PTU B-TECH
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FAQ
Frequently Asked Questions
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.