Solved question paper for CHEMISTRY May-2013 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry May-2013
PTU • B-TECH • Information Technology • 1st-2nd • May-2013
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 salts are responsible for temporary and permanent hardness of water?Short Answer 2 Marks May-2013 • PTU B-TECH
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May 2020 How are salts responsible for the temporary and permanent hardness of water? Explain.
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May 2017
SECTION-A
1. Write briefly :
a) Explain temporary and permanent hardness of water.
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May 2012 Explain temporary and permanent hardness of water.
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Dec 2012 Name the salts responsible for temporary and permanent hardness of water.
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May 2011 What salts are responsible for temporary and permanent hardness of water?
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Dec 2011 Explain degree of hardness of water.
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Dec 2008 How are salts responsible for the temporary and permanent hardness of water? Explain.
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What is differential air corrosion?Short Answer 2 Marks May-2013 • 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 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 do you understand by Galvanic 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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Arrange the following in increasing order of UV absorption maxima.Short Answer 2 Marks May-2013 • PTU B-TECH
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May 2011 Arrange the following in increasing order of UV absorption maxima.
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Name two biodegradable solvents.Short Answer 2 Marks May-2013 • PTU B-TECH
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What is number average molecular weight?Short Answer 2 Marks May-2013 • PTU B-TECH
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What is photochemistry?Short Answer 2 Marks May-2013 • PTU B-TECH
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May 2019 What is meant by photochemical processes?
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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 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 is thermal cracking?Short Answer 2 Marks May-2013 • PTU B-TECH
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May 2014 What is thermal cracking?
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What do you understand by nanotechnology?Short Answer 2 Marks May-2013 • 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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Dec 2012 What are nanomaterials?
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What do you understand by bathochromic and hypsochromic shifts?Short Answer 2 Marks May-2013 • PTU B-TECH
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Match each absorption band with the following groups: Functional group C=0 N–H –O–H –C≡C–; v cm–1 3400 2050 1700 3350Short Answer 2 Marks May-2013 • PTU B-TECH
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May 2011 Match each absorption band with the following groups: >C=O, -N-H, -O-H, -C=C-; νcm⁻¹: 3400, 2050, 1700, 3350.
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Discuss the principles of IR Spectroscopy.Long Answer 4 Marks May-2013 • PTU B-TECH
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Dec 2023 What are the applications of IR spectroscopy?
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May 2012 Discuss IR spectroscopy and its applications.
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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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What do you understand by chemical shift?Short Answer 2 Marks May-2013 • PTU B-TECH
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May 2013 What do you understand by chemical shift?
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May 2012 What is chemical shift?
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May 2011 What do you understand by chemical shift?
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Explain the concept of fluorescence and phosphorescence with the help of well labelled Jablonski diagram.Long Answer 5 Marks May-2013 • PTU B-TECH
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May 2020 Draw a well labelled Jablonski diagram and explain phosphorescence.
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May 2020 Draw a well labelled Jablonski diagram and explain fluorescence.
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What are optical sensors?Short Answer 3 Marks May-2013 • 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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Dec 2012 What are optical sensors?
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What is priming and foaming? Explain.Short Answer 4 Marks May-2013 • PTU B-TECH
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Dec 2009 What is priming and foaming?
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Discuss the treatment of ground water to be used for domestic purpose.Long Answer 2 Marks May-2013 • PTU B-TECH
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Dec 2012 Discuss the treatment of ground water to be used for domestic purposes.
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Explain designing alternative reaction methodology with an example.Long Answer 4 Marks May-2013 • PTU B-TECH
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Explain Green chemistry and its concepts.Long Answer 2 Marks May-2013 • 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 2012 What is Green Chemistry? Why is it called so?
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Dec 2011 Define Green Chemistry.
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What are biofuels?Short Answer 2 Marks May-2013 • PTU B-TECH
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“Corrosion of tin metal by Chlorine is rapid and excessive but that of silver is not so”. Why?Long Answer 4 Marks May-2013 • PTU B-TECH
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What do you understand by stress corrosion? Explain.Long Answer 2 Marks May-2013 • 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 is wet corrosion?
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May 2013 What are the factors which affect corrosion?
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May 2012 What do you understand by Galvanic 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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What is a composite?Short Answer 4 Marks May-2013 • PTU B-TECH
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What are the advantages of composites?Short Answer 4 Marks May-2013 • 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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Dec 2012 What are composite materials? What are the advantages and limitations of polymer reinforced composites?
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Discuss polymer reinforced composites.Long Answer 4 Marks May-2013 • PTU B-TECH
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May 2012 Discuss polymer reinforced composites.
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Discuss the effect of molecular weight on properties of polymers.Long Answer 4 Marks May-2013 • PTU B-TECH
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May 2023 b) How does molecular weight affect the properties of polymer?
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May 2020 How does molecular weight affect the properties of polymer?
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Dec 2016 Describe the effect of molecular weight on the properties of polymers.
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Discuss applications of nanomaterials in medicine.Long Answer 4 Marks May-2013 • PTU B-TECH
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May 2016 Discuss applications of nanomaterials in medicine.
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Explain self assembling materials and two dimensional assemblies.Long Answer 4 Marks May-2013 • 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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Dec 2012 What do you understand by self-assembling materials? Explain.
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Discuss the production of propylene.Long Answer 4 Marks May-2013 • PTU B-TECH
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May 2017
Discuss in details all the aspects including chemistry of production of ethylene and
\r\npropylene. -
May 2016 Discuss cracking for the production of ethylene.
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May 2016 Discuss purification for the production of ethylene.
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May 2014 Discuss the production of ethylene. Give its use.
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Dec 2014 Discuss in detail the production process of ethylene.
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Dec 2014 Discuss in detail the production process of propylene.
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Dec 2011 Discuss the production of ethylene and propylene.
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Give the uses of propylene.Short Answer 4 Marks May-2013 • PTU B-TECH
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Explain natural gas treatment processes.Long Answer 4 Marks May-2013 • PTU B-TECH
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Dec 2023 Explain the Natural Gas treatment Processes.
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Dec 2019 Discuss in detail the natural gas treatment processes and conversion 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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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.