Solved question paper for CHEMISTRY May-2019 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry May-2019
PTU • B-TECH • Information Technology • 1st-2nd • May-2019
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-
Write a short note on various wavelength shifts shown by organic molecules in UV-Vis spectroscopy.Short Answer 2 Marks May-2019 • PTU B-TECH
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How can UV spectroscopy distinguish between ethylbenzene and styrene?Short Answer 2 Marks May-2019 • PTU B-TECH
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Write notes on rocking and wagging vibrations.Short Answer 2 Marks May-2019 • PTU B-TECH
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What do you mean by Doppler broadening? Give its reasons.Short Answer 2 Marks May-2019 • PTU B-TECH
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Write in brief about emergence of Green Chemistry.Short Answer 2 Marks May-2019 • PTU B-TECH
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Dec 2023 Define Green chemistry.
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May 2020 Explain any two principles of Green Chemistry with the help of examples.
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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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What is meant by photochemical processes?Short Answer 2 Marks May-2019 • PTU B-TECH
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May 2019 Give examples of photochemical processes.
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May 2018
What is photochemistry?
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May 2015 What are primary and secondary photochemical processes?
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May 2013 What is photochemistry?
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May 2012 What are primary and secondary photochemical processes?
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May 2011 What is photochemistry?
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Dec 2011 What is photosensitization?
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Give examples of photochemical processes.Short Answer 2 Marks May-2019 • PTU B-TECH
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May 2019 What is meant by photochemical processes?
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May 2018
What is photochemistry?
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May 2015 What are primary and secondary photochemical processes?
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May 2013 What is photochemistry?
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May 2012 What are primary and secondary photochemical processes?
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May 2011 What is photochemistry?
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Dec 2011 What is photosensitization?
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What are coercing colloids? How are they formed?Short Answer 2 Marks May-2019 • PTU B-TECH
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May 2022 What are coercing colloids? Give its applications.
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May 2015 What are Coercing Colloids?
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May 2012 What are coercing colloids?
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How will you classify crude oil?Short Answer 2 Marks May-2019 • PTU B-TECH
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May 2022 What is the composition of crude oil? Also, classify the crude oil in different categories.
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May 2020 Write a short note on classification of crude oil.
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May 2019 Describe the composition of crude oil, emphasising on hydrocarbon and non-hydrocarbon components present in it.
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Dec 2018 What is the composition of crude oil? Discuss various petroleum products that come from crude oil.
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Dec 2016 Describe the composition of crude oil.
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May 2015 What is crude oil? Give composition and classification of crude oil.
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Dec 2012 What is Crude Oil? Give its composition and classification.
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Write about stress corrosions in brief.Short Answer 2 Marks May-2019 • PTU B-TECH
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Dec 2017
Write a short note on waterline corrosion.
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Dec 2005 Write in brief about pitting corrosion.
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Write a detailed note on Fermi Resonance.Long Answer May-2019 • PTU B-TECH
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Discuss the reasons for shielding and deshielding of protons in PMR. Why are aromatic protons more deshielded than vinylic protons?Long Answer May-2019 • PTU B-TECH
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Write a detailed note on optical sensors.Long Answer May-2019 • PTU B-TECH
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Write a detailed note on priming and foaming in water.Long Answer May-2019 • PTU B-TECH
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Dec 2017
Describe the term priming and foaming in Water and its treatment.
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Discuss alternative solvents in detail with examples.Long Answer May-2019 • PTU B-TECH
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Write about ultrasonic radiations in Green synthesis with examples.Long Answer May-2019 • PTU B-TECH
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May 2022 How can the ultrasonic radiations be used to carry out the green chemical synthesis? Explain by taking a suitable example.
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Dec 2019 Describe ultrasonication and microwave irradiation in Green synthesis with suitable examples.
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Dec 2011 How the use of ultrasonic radiation can help in green syntheses?
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Write in detail about supramolecular photochemistry.Long Answer May-2019 • PTU B-TECH
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Describe designing of safer chemicals with an example being used on commercial scale.Long Answer May-2019 • PTU B-TECH
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May 2014 Elaborate the concept of design of safer chemicals with suitable example.
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Dec 2011 Explain the design of safer chemicals by giving examples.
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Elaborate in detail with examples about future perspectives of chemistry at nanoscale.Long Answer 8 Marks May-2019 • PTU B-TECH
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Differentiate between concentration cell corrosion and differential aeration corrosion.Long Answer May-2019 • PTU B-TECH
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May 2019 Give one main point of difference between wet and dry corrosion.
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May 2017
Differentiate between dry and wet corrosion.
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May 2016 Compare dry and wet corrosion.
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May 2014 Differentiate wet corrosion from dry corrosion.
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What are regular and irregular polymer structures? Discuss the chemistry behind regularity and irregularity of polymer structures.Long Answer May-2019 • PTU B-TECH
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Describe the composition of crude oil, emphasising on hydrocarbon and non-hydrocarbon components present in it.Long Answer May-2019 • PTU B-TECH
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May 2022 What is the composition of crude oil? Also, classify the crude oil in different categories.
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May 2020 Write a short note on classification of crude oil.
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May 2019 How will you classify crude oil?
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Dec 2018 What is the composition of crude oil? Discuss various petroleum products that come from crude oil.
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Dec 2016 Describe the composition of crude oil.
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May 2015 What is crude oil? Give composition and classification of crude oil.
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Dec 2012 What is Crude Oil? Give its composition and classification.
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Write a note on self-assembling nanoscale materials.Long Answer May-2019 • PTU B-TECH
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Discuss the chemistry and mechanism of wet corrosion.Long Answer May-2019 • PTU B-TECH
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May 2020 Explain the mechanism of galvanic corrosion.
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May 2020 Explain the mechanism of wet corrosion.
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Dec 2018 Discuss the mechanism of wet corrosion.
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Dec 2017
Explain the mechanism of electrochemical corrosion with example.
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May 2016 What is corrosion? Explain electrochemical theory of corrosion.
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May 2016 Explain differential metal corrosion.
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Dec 2016 Explain differential aeration corrosion.
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Dec 2016 Give the cause of corrosion.
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May 2015 Explain waterline corrosion.
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May 2015 Explain stress corrosion.
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May 2015 Explain the mechanism of electrochemical corrosion.
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Dec 2015 Describe sacrificial anodic method for corrosion prevention with an example.
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May 2014 Define corrosion. Discuss the mechanism of wet corrosion.
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May 2012 Explain the mechanism of wet corrosion.
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Dec 2012 Describe the mechanism of electrochemical corrosion.
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Dec 2012 Explain dry corrosion.
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Dec 2012 Describe the mechanism of electrochemical corrosion.
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May 2011 Discuss the mechanism of wet corrosion.
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Dec 2011 Discuss mechanism of wet corrosion.
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May 2008 What is corrosion of metals? Explain electro-chemical corrosion with its mechanism.
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Dec 2008 Explain the type of corrosion with evolution of hydrogen ions.
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May 2007 Discuss briefly: Galvanic corrosion
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Dec 2007 Explain briefly galvanic cell corrosion.
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Dec 2007 Explain briefly pitting corrosion.
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Dec 2006 Discuss briefly Galvanic corrosion.
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Write a note on mesoscaleself-assemblies.Long Answer May-2019 • 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.