Solved question paper for CHEMISTRY Dec-2012 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry Dec-2012
PTU • B-TECH • Electrical Engineering • 1st-2nd • Dec-2012
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 happens when temporary hard water is boiled? Write chemical equations.Very Short Answer 2 Marks Dec-2012 • PTU B-TECH
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May 2014 What happens when temporary hard water is boiled? Write chemical equations.
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Dec 2010 What happens when temporary hard water is boiled? Write the chemical reactions.
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Give two examples of monomers that will not give stereoregular polymer.Very Short Answer 2 Marks Dec-2012 • PTU B-TECH
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May 2018
Give two examples of monomers that will give stereoregular polymers.
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What is the origin of petroleum?Very Short Answer 2 Marks Dec-2012 • PTU B-TECH
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The absorption bands in UV-visible spectra are usually broad. Explain.Very Short Answer 2 Marks Dec-2012 • PTU B-TECH
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May 2014 Most absorption bands in the UV-Visible spectra are very broad. Explain.
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Dec 2012 “The absorption bands in UV-visible spectra are usually broad.” Explain.
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Explain how rusting of iron is prevented by galvanization.Very Short Answer 2 Marks Dec-2012 • PTU B-TECH
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May 2010 Explain the process of galvanization of iron. How does it prevent the corrosion of iron?
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Distinguish between photochemical and thermal reactions.Very Short Answer 2 Marks Dec-2012 • PTU B-TECH
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May 2023 a) Distinguish between: i) Thermal and photochemical reactions ii) Fluorescence and phosphorescence
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May 2015 Distinguish between photophysical and photochemical process.
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Dec 2015 Distinguish between thermal and photochemical reactions.
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May 2005 Distinguish between Thermal and photochemical reactions.
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Write the formula describing “risk” for exposure of chemical(s) in an industry.Very Short Answer 2 Marks Dec-2012 • PTU B-TECH
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What are nanomaterials?Very Short Answer 2 Marks Dec-2012 • PTU B-TECH
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Dec 2018 What are nanoscale materials? Why are nanoparticles so important?
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Dec 2016 What are nanoscale materials? How these are useful?
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May 2014 What are nanomaterials?
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May 2013 What do you understand by nanotechnology?
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Explain the process of vulcanisation of rubber. What is its use?Very Short Answer 2 Marks Dec-2012 • PTU B-TECH
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Define Lambert-Beer law.Very Short Answer 2 Marks Dec-2012 • PTU B-TECH
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May 2022 What is Lambert-Beer’s Law?
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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 2005 Explain Beer-Lambert Law.
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What is spectroscopy? Discuss the principle and working of a spectrophotometer with the help of schematic diagram.Short Answer 4 Marks Dec-2012 • PTU B-TECH
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May 2011 Discuss the principle and working of spectrophotometer with the help of a diagram.
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Explain spin-spin splitting in NMR.Short Answer 4 Marks Dec-2012 • PTU B-TECH
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May 2016 Explain the principle of nuclear magnetic resonance spectroscopy.
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Dec 2016 Discuss the principle of NMR spectroscopy.
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Dec 2016 What is NMR and MRS?
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May 2015 Discuss the principles of NMR.
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Dec 2015 What is chemical shift in NMR?
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May 2014 Explain the principle of NMR spectroscopy.
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Dec 2014 Explain principles of NMR Spectroscopy.
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Dec 2012 Explain the principle of NMR.
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Dec 2011 What information is obtained from spin-spin splitting in NMR?
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Dec 2008 Explain the shielding and deshielding process in NMR-spectroscopy with some suitable examples.
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May 2005 In relation to NMR spectra, explain Chemical Shift and TMS.
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May 2005 In relation to NMR spectra, explain Shielding and Deshielding.
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Dec 2005 What do you understand by NMR spectroscopy?
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What is meant by quantum yield of a photochemical reaction? Explain.Short Answer 4 Marks Dec-2012 • PTU B-TECH
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May 2022 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?
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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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Explain fluorescence.Short Answer 2 Marks Dec-2012 • PTU B-TECH
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May 2016 Explain phosphorescence.
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Dec 2014 Explain phosphorescence.
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Dec 2014 Explain phosphorescence.
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What are optical sensors?Short Answer 2 Marks Dec-2012 • PTU B-TECH
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Dec 2023 What are optical sensors?
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May 2015 What are Optical Sensors?
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May 2013 What are optical sensors?
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Discuss the treatment of ground water to be used for domestic purposes.Short Answer 4 Marks Dec-2012 • PTU B-TECH
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May 2013 Discuss the treatment of ground water to be used for domestic purpose.
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Give the names of three sludge forming and three scale forming compounds.Short Answer 2 Marks Dec-2012 • PTU B-TECH
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Why natural water should not be used for boilers?Short Answer 2 Marks Dec-2012 • PTU B-TECH
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Catalytic reagents are superior to stoichiometric reagents. Explain with the help of examples.Short Answer 4 Marks Dec-2012 • PTU B-TECH
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What do you understand by % yield in a chemical reaction? Describe the concept of % atom economy by taking examples from rearrangement reactions and substitution reactions.Long Answer 4 Marks Dec-2012 • PTU B-TECH
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Which part of the nail, inside or outside of wood undergoes corrosion readily and why?Short Answer 4 Marks Dec-2012 • PTU B-TECH
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Dec 2005 Why does a part of nail inside the wood undergo corrosion easily?
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Describe the mechanism of electrochemical corrosion.Short Answer 4 Marks Dec-2012 • 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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May 2019 Discuss the chemistry and 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 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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How the molecular weight of polymer can be determined by number average method?Short Answer 4 Marks Dec-2012 • PTU B-TECH
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May 2016 What do you understand by number average molecular weight of polymer?
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May 2014 How the number average molecular weight of the polymer can be determined?
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What are composite materials? What are the advantages and limitations of polymer reinforced composites?Short Answer 4 Marks Dec-2012 • PTU B-TECH
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May 2022 What is meant by polymer reinforced composite?
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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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Discuss supramolecular structures.Short Answer 4 Marks Dec-2012 • PTU B-TECH
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May 2017
What are supramolecular structures? Discuss their properties.
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Dec 2017
Discuss about supramolecular structures.
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May 2015 Explain super molecular structures.
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May 2014 Explain supramolecular structures. Give applications of materials having supramolecular structures.
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Dec 2011 Explain supramolecular structures.
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What do you understand by self-assembling materials? Explain.Short Answer 4 Marks Dec-2012 • PTU B-TECH
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Dec 2023 Explain the self-assembling materials.
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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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What is Crude Oil? Give its composition and classification.Short Answer 4 Marks Dec-2012 • 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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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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Describe the second generation petrochemicals. Discuss giving examples.Short Answer 4 Marks Dec-2012 • PTU B-TECH
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Dec 2018 What are petrochemicals? Discuss second generation petrochemicals.
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May 2017
Write a brief note on second generation petrochemicals. Give examples.
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May 2015 Discuss third generations petrochemicals by giving suitable examples.
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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.