Solved question paper for CHEMISTRY Dec-2017 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry Dec-2017
PTU • B-TECH • Mechanical Engineering • 1st-2nd • Dec-2017
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-
SECTION A
1. Compulsory Question:
a) Why do we express hardness of water in terms of CaCO3, equivalents?Very Short Answer Dec-2017 • PTU B-TECH-
May 2014 Why is hardness of water expressed in terms of calcium carbonate equivalent?
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May 2005 Why do we express hardness of water in terms of CaCO3 equivalents?
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What is meant by single electrode potential?
Very Short Answer Dec-2017 • PTU B-TECH-
May 2012 What is electrode potential?
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What do you understand by reduced phase rule?
Very Short Answer Dec-2017 • PTU B-TECH-
May 2014 What is phase rule?
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Dec 2012 What is phase rule?
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May 2010 What is condensed phase rule?
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May 2010 When is condensed phase rule applied?
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May 2005 What is phase rule? What is its significance?
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Dec 2005 What is condensed Phase Rule? When is it applied?
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Write a note on soil corrosion.
Very Short Answer Dec-2017 • PTU B-TECH-
Dec 2005 Write in brief about soil corrosion.
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What do you mean by spin-lattice relaxation in NMI?
Very Short Answer Dec-2017 • PTU B-TECH -
List the three criteria for phase equilibrium of a multi-component system.
Very Short Answer Dec-2017 • PTU B-TECH -
Why is it not possible to measure the limiting molar conductivity of a weak
electrolyte experimentally?Very Short Answer Dec-2017 • PTU B-TECH -
Define quantum yield. Give its mathematical expression.
Very Short Answer Dec-2017 • PTU B-TECH-
Dec 2018 What is quantum yield?
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May 2016 Define quantum yield.
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May 2015 Define quantum yield. What are the reasons for low and high quantum yield?
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Dec 2015 Define quantum yield.
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Dec 2012 What is quantum yield?
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Dec 2010 Discuss quantum yield.
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Dec 2008 Define quantum yield and explain with specific examples.
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Dec 2005 What do you understand by quantum yield?
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Discuss the principle behind liquid chromatography.
Very Short Answer Dec-2017 • PTU B-TECH-
May 2016 Describe the instrumentation of HPLC & flow diagram of LC instruments.
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May 2013 Define chromatography. Draw flow diagram of LC instrument.
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May 2011 Draw the flow-diagram of liquid chromatography instrument. Discuss its principle.
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Define B.O.D and C.O.D.
Very Short Answer Dec-2017 • PTU B-TECH -
SECTION B
2. What is boiler feed water? Explain the scale and sludge formation in boiler.
Short Answer Dec-2017 • PTU B-TECH -
Explain the mechanism of electrochemical corrosion with example.
Short Answer Dec-2017 • PTU B-TECH-
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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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 Describe the mechanism of electrochemical 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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Explain the principle and working of TLC. List its important applications.
Short Answer Dec-2017 • PTU B-TECH -
What is liquid junction potential? Derive the expression for liquid junction potential.
How can it be minimized or eliminated?Short Answer Dec-2017 • PTU B-TECH-
May 2014 Explain liquid junction potential.
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May 2013 What do you understand by liquid junction potential?
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Dec 2012 What is liquid junction potential?
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May 2011 What is liquid junction potential?
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SECTION C
6. What do you understand by luminescence? Briefly explain the different types of
luminescence.Long Answer Dec-2017 • PTU B-TECH -
What do you mean by resolving power of a spectrometer? Explain taking the example of a prism as the dispersing element. Also explain how the resolution depends upon slit width.
Long Answer Dec-2017 • PTU B-TECH -
How does absorption signal originate in NMR spectroscopy? What is meant by resonance in NMR spectroscopy.
Long Answer Dec-2017 • PTU B-TECH -
Derive the criteria for phase equilibria for a multi-component system. Deduce from it, the criteria for two phase equilibria for one component system.
Long Answer Dec-2017 • PTU B-TECH
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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.