Solved question paper for CHEMISTRY May-2012 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry May-2012
PTU • B-TECH • Information Technology • 1st-2nd • May-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 are coercing colloids?Short Answer 2 Marks May-2012 • PTU B-TECH
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May 2022 What are coercing colloids? Give its applications.
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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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What is the difference between allowed and forbidden transition?Short Answer 2 Marks May-2012 • PTU B-TECH
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What is the range of peak identification region in IR spectrum?Short Answer 2 Marks May-2012 • PTU B-TECH
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Dec 2018 What is the range of peak identification region in IR spectrum?
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Discuss metal alloys for corrosion control.Short Answer 2 Marks May-2012 • 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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Dec 2019 Discuss briefly about differential aeration 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 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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Sharp peaks are seldom observed in UV spectrum. Explain.Short Answer 2 Marks May-2012 • PTU B-TECH
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Milliequivalent per litre of hardness = ________ ppm. Explain.Fill in the Blanks 2 Marks May-2012 • PTU B-TECH
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Dec 2018 Milliequivalent per litre of hardness = ppm. Explain.
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Give the possible electronic excitations for CH2CH=CH2.Short Answer 2 Marks May-2012 • PTU B-TECH
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Give the possible electronic excitations for CH3CHO.Short Answer 2 Marks May-2012 • PTU B-TECH
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How 1H NMR can be used to distinguish p-CH3C6H4CH3 from C2H5C6H5 ?Short Answer 2 Marks May-2012 • PTU B-TECH
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Dec 2018 How can 1H NMR be used to distinguish p-CH3C6H4CH3 from C2H5C6H5?
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Mention two examples of photochemical reactions having low quantum yield.Short Answer 2 Marks May-2012 • PTU B-TECH
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Dec 2016 Give two examples of photochemical reactions having high quantum yield.
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What is Green Chemistry? Why is it called so?Short Answer 2 Marks May-2012 • 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 2019 Write in brief about emergence of Green Chemistry.
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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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Dec 2011 Define Green Chemistry.
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Discuss factors contributing to the broadening of a spectral line.Long Answer 4 Marks May-2012 • PTU B-TECH
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Dec 2016 What do you understand by natural linewidth of a spectral line?
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Dec 2016 Discuss the factors responsible for intensity of spectral lines.
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May 2012 Discuss the factors responsible for intensity of spectral lines.
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May 2010 Explain processes that contribute to the finite width of a spectral line.
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May 2008 Explain processes which contribute to the finite width of a spectral line.
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Dec 2005 Explain the line width of spectra.
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Discuss IR spectroscopy and its applications.Long Answer 4 Marks May-2012 • PTU B-TECH
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Dec 2023 What are the applications of IR spectroscopy?
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May 2013 Discuss the principles of IR Spectroscopy.
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Dec 2012 Discuss the applications of IR spectroscopy.
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May 2011 Give the scope of IR spectroscopy.
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Photobromination of cinnamic acid to dibromocinnamic acid was carried out in blue light of wavelength 440 nm at 35°C using light intensity of 1.5 × 10 –3 J per second. An exposure of 20 minutes produced a decrease of 0.075 millimole of bromine. The solution absorbed 80% of the light passing through it. Calculate the quantum yield of the reaction.Long Answer 4 Marks May-2012 • PTU B-TECH
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Discuss supra molecular photochemistry.Long Answer 4 Marks May-2012 • PTU B-TECH
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Explain priming and foaming in boilers.Long Answer 4 Marks May-2012 • PTU B-TECH
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Discuss hot lime soda process of water softening.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2015 Discuss hot lime soda process of water softening.
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May 2014 Discuss the hot lime-soda process for softening of water.
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May 2013 Discuss Lime-soda process for water softening.
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May 2012 Discuss hot lime soda process of water softening.
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Dec 2011 Discuss hot lime soda process for softening of water. What are its advantages and disadvantages?
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Discuss the use and advantages of water and ionic liquids as solvents in organic reactions.Long Answer 4 Marks May-2012 • PTU B-TECH
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What are microwaves? How these waves can speed up the chemical reaction?Long Answer 4 Marks May-2012 • PTU B-TECH
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What do you understand by Galvanic corrosion?Long Answer 4 Marks May-2012 • PTU B-TECH
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Dec 2018 What is waterline corrosion?
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Dec 2016 What is waterline corrosion?
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May 2015 What is Corrosion? Discuss the factors affecting corrosion.
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May 2013 What is differential air corrosion?
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May 2013 What do you understand by stress corrosion? Explain.
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May 2013 What is wet corrosion?
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May 2013 What are the factors which affect corrosion?
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May 2012 What is galvanic corrosion?
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May 2011 What is wet corrosion?
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Dec 2011 What do you understand by corrosion and stress corrosion?
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Dec 2010 What is dry corrosion?
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Dec 2010 What do you understand by wet corrosion?
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Explain the use of inhibitors for corrosion control.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2015 What are inhibitors? Explain types of inhibitors employed to control corrosion.
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Dec 2015 Explain types of inhibitors employed to control corrosion.
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May 2011 Discuss the use of corrosion inhibitors.
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Dec 2011 Discuss the use of corrosion inhibitors.
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What is polymerization? Discuss its types.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2023 a) What are different types of polymerization reactions? Give examples
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May 2020 What are different types of polymerization reactions? Give examples.
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May 2016 What is polymerization?
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May 2015 What is Polymerization? Discuss various types of polymerization.
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May 2014 What is polymerization? Describe the types of polymerization.
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Dec 2011 What is meant by polymerization?
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Discuss polymer reinforced composites.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2013 Discuss polymer reinforced composites.
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Discuss nanocrystals.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2018
Explain nanocrystals.
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Give the applications of nanochemistry.Long Answer 4 Marks May-2012 • PTU B-TECH
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How crude oil is classified? Discuss the production of ethylene.Long Answer 4 Marks May-2012 • PTU B-TECH
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Discuss natural gas liquids.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2022 What are natural gas liquids?
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FAQ
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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.
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