Solved question paper for CHEMISTRY Dec-2019 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry Dec-2019
PTU • B-TECH • Information Technology • 1st-2nd • Dec-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-
Calculate the degrees of freedom for acetylene molecule and water molecule.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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How is Bohr magneton related to Nuclear magneton?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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Discuss briefly about differential aeration corrosion.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2023 a) Discuss the importance of design and material selection in controlling corrosion.
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May 2013 Explain the protective measures of controlling corrosion.
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May 2013 Discuss atmospheric corrosion.
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May 2012 Discuss metal alloys for corrosion control.
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May 2012 Discuss anodic and cathodic coating for corrosion control.
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Dec 2012 Discuss differential aeration corrosion.
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May 2007 Discuss the importance of design and material selection in controlling corrosion.
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May 2007 Discuss briefly: Stress corrosion
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Dec 2007 Describe various methods employed for protection of metals from corrosion.
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Dec 2006 Discuss the importance of design and material selection in controlling corrosion.
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Dec 2006 Discuss briefly Stress corrosion.
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Write a note on coercing colloids.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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What are polymer reinforced composites?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2022 What is meant by polymer reinforced composite?
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May 2015 What are Reinforced Composite Materials?
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May 2013 What are the advantages of composites?
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Dec 2012 What are composite materials? What are the advantages and limitations of polymer reinforced composites?
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What is the physical significance of extinction coefficient?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2016 What is the significance of molar extinction co-efficient?
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Write a note on properties of natural gas.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2023 b) What is natural gas? Write down the properties of natural gas.
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May 2020 Write a short note on properties of natural gas.
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Dec 2014 What are the properties of natural gas?
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Discuss in detail about use of alternative solvents in Green Chemistry.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2014 Explain the concept of alternative solvents in Green Chemistry.
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What is resonance fluorescence? Give one example.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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What do you understand by gerade and ungerade orbitals?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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Explain with suitable derivations what type of rotation-vibration spectrum is observed for a diatomic molecule, taking it as an anharmonic oscillator.Long Answer 8 Marks Dec-2019 • PTU B-TECH
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What do you understand by terms spin multiplicity, singlet and triplet states? Explain Jablonski diagram in detail.Long Answer 8 Marks Dec-2019 • PTU B-TECH
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What do you understand by internal conditioning? Explain phosphate and calgon conditioning.Long Answer 8 Marks Dec-2019 • PTU B-TECH
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Describe ultrasonication and microwave irradiation in Green synthesis with suitable examples.Long Answer 8 Marks Dec-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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May 2019 Write about ultrasonic radiations in Green synthesis with examples.
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Dec 2011 How the use of ultrasonic radiation can help in green syntheses?
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Write a detailed note on various types of corrosion and various methods used for corrosion control with chemical equations.Long Answer 8 Marks Dec-2019 • PTU B-TECH
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Write the differences between thermoplastics and thermosetting plastics. Also discuss differences in methods of their preparations.Long Answer 8 Marks Dec-2019 • PTU B-TECH
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Write a detailed note on nanoscale materials.Long Answer 8 Marks Dec-2019 • PTU B-TECH
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May 2023 Write a short note on the following: b) Nanoscale material
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Discuss in detail the natural gas treatment processes and conversion processes.Long Answer 8 Marks Dec-2019 • PTU B-TECH
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Dec 2023 Explain the Natural Gas treatment 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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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.