Solved question paper for CHEMISTRY May-2022 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry May-2022
PTU • B-TECH • Mechanical Engineering • 1st-2nd • May-2022
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-
What is the importance of ‘finger print region’ in infrared spectroscopy?Short Answer 2 Marks May-2022 • PTU B-TECH
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May 2020 What is the importance of finger print region in IR spectroscopy?
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May 2007 What is the importance of IR spectroscopy in fingerprint region?
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Dec 2007 What is the importance of IR spectroscopy in the fingerprint region?
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Dec 2006 What is the importance of IR spectroscopy in finger print region?
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What is Lambert-Beer’s Law?Short Answer 2 Marks May-2022 • PTU B-TECH
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Dec 2018 Define Beer-Lambert law. Derive the equation.
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May 2016 Define Beer-Lambert’s law. What are its limitations?
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Dec 2016 Define Beer-Lambert law. Derive the equation.
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May 2014 Define and explain Grotthus-Draper law and Lambert-Beer law.
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Dec 2014 Explain Beer-Lambert Law.
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Dec 2014 Explain Beer-Lambert Law.
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Dec 2012 Define Lambert-Beer law.
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Dec 2005 Explain Beer-Lambert Law.
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Distinguish between hard water and soft water.Short Answer 2 Marks May-2022 • PTU B-TECH
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May 2013 Distinguish between hard water and soft water.
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May 2011 Distinguish between hard water and soft water.
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Write down the properties of water to be used as green solvent.Short Answer 2 Marks May-2022 • PTU B-TECH
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The observed chemical shift of a proton is 350 Hz from TMS and the operative frequency of NMR spectrometer is 100 MHz. Calculate the chemical shift in δ ppm.Short Answer 2 Marks May-2022 • PTU B-TECH
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What is calgon conditioning of boiler feed water?Short Answer 2 Marks May-2022 • PTU B-TECH
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Dec 2016 What is boiler feed water and boiler corrosion?
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May 2014 What are the specifications for boiler feed water?
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May 2007 What is colloidal conditioning of boiler feed water?
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Dec 2007 What is Calgon conditioning of boiler feed water?
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Dec 2006 What is colloidal conditioning of boiler feed water?
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What is meant by polymer reinforced composite?Short Answer 2 Marks May-2022 • PTU B-TECH
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Dec 2019 What are polymer reinforced composites?
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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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Why does the small anodic area result in intense corrosion?Short Answer 2 Marks May-2022 • PTU B-TECH
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What are natural gas liquids?Short Answer 2 Marks May-2022 • PTU B-TECH
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May 2012 Discuss natural gas liquids.
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What are nonmaterial’s?Short Answer 2 Marks May-2022 • PTU B-TECH
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Why molecules absorb in UV-Visible region? What are the types of electronic transitions that can occur in a molecule? Explain giving examples.Long Answer 4 Marks May-2022 • PTU B-TECH
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May 2019 Why is UV-Visible spectroscopy called electronic spectroscopy? Explain various types of transitions for organic molecules that take place in UV-Visible range.
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What is the principle of IR spectroscopy? Calculate the fundamental modes of vibrations in C6H6 and CH4 molecules.Long Answer 4 Marks May-2022 • PTU B-TECH
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What is meant by quantum yield of a photochemical reaction? How would you explain very high and very low quantum yields of some photochemical reactions?Long Answer 4 Marks May-2022 • PTU B-TECH
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Dec 2012 What is meant by quantum yield of a photochemical reaction? Explain.
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Dec 2009 State and explain Einstein law of photochemical equivalence. What is meant by quantum yield of a photochemical process.
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Differentiate between fluorescence and phosphorescence.Long Answer 4 Marks May-2022 • PTU B-TECH
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Dec 2016 Give the difference between fluorescence and phosphorescence.
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May 2015 What is fluorescence and how is it different from phosphorescence?
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Dec 2014 What is the difference between fluorescence and phosphorescence?
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May 2013 What is fluorescence and how it is different from phosphorescence?
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May 2011 Compare fluorescence with phosphorescence.
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Dec 2011 Differentiate fluorescence from phosphorescence.
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Dec 2010 Differentiate phosphorescence from fluorescence.
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May 2005 Distinguish between Fluorescence and phosphorescence.
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Explain the desalination of water by reverse osmosis method.Long Answer 4 Marks May-2022 • PTU B-TECH
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Dec 2017
With the help of a neat diagram, explain reverse osmosis method of desalination.
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May 2012 Describe reverse osmosis for desalination of water.
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Dec 2010 How desalination of water can be achieved by reverse osmosis?
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Differentiate between scale and sludge. How are scales formed? What are their disadvantages?Long Answer 4 Marks May-2022 • PTU B-TECH
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Name the twelve principles of green chemistry. Explain the use of innocuous reagents in green synthesis.Long Answer 4 Marks May-2022 • PTU B-TECH
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Dec 2016 Write any six principles of Green Chemistry.
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Dec 2014 Write down twelve basic principles of green chemistry.
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How can the ultrasonic radiations be used to carry out the green chemical synthesis? Explain by taking a suitable example.Long Answer 4 Marks May-2022 • PTU B-TECH
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May 2019 Write about ultrasonic radiations in Green synthesis with examples.
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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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What is differential aeration corrosion? Illustrate the reactions involved in differential aeration corrosion with reference to iron materials.Long Answer 4 Marks May-2022 • PTU B-TECH
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What are the different methods of controlling corrosion? Explain sacrificial anodic protection method.Long Answer 4 Marks May-2022 • PTU B-TECH
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Dec 2023 What do you understand by wet and dry corrosion? How the corrosion can be prevented?
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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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Differentiate between addition polymerisation and condensation polymerization with suitable examples.Long Answer 4 Marks May-2022 • PTU B-TECH
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May 2016 Differentiate between addition polymerization and condensation polymerization. Give examples of addition and condensation polymerization.
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Dec 2014 Differentiate between addition and condensation polymers.
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‘Weight average molecular weight is higher than number-average molecular weight of a polymer’. Explain.Long Answer 4 Marks May-2022 • PTU B-TECH
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Dec 2018 Polymers have average molecular weights. Explain.
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What are the characteristics of self assembly? Explain the formation of self assembled monolayers.Long Answer 4 Marks May-2022 • PTU B-TECH
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What are coercing colloids? Give its applications.Long Answer 4 Marks May-2022 • PTU B-TECH
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May 2019 What are coercing colloids? How are they formed?
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May 2015 What are Coercing Colloids?
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May 2012 What are coercing colloids?
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What is the composition of crude oil? Also, classify the crude oil in different categories.Long Answer 4 Marks May-2022 • PTU B-TECH
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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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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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Describe the catalytic cracking of crude petroleum oil.Long Answer 4 Marks May-2022 • 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?
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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.