Solved question paper for CHEMISTRY May-2016 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry May-2016
PTU • B-TECH • Mechanical Engineering • 1st-2nd • May-2016
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-
Define quantum yield.Very Short Answer 2 Marks May-2016 • PTU B-TECH
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Dec 2018 What is quantum yield?
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Dec 2017
Define quantum yield. Give its mathematical expression.
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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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What is the basic principle of Chromatography? Give various types of liquid chromatography.Short Answer 2 Marks May-2016 • PTU B-TECH
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May 2017
What is partition chromatography?
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Dec 2016 Name the two phases of chromatography.
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May 2015 What is the basic principle of chromatographic techniques?
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May 2015 Discuss various types of liquid chromatography.
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Dec 2015 What is the basic principle of chromatographic techniques?
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May 2014 What is chromatography?
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May 2014 Define chromatography. Discuss various types of chromatography.
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May 2014 Give the applications of chromatography.
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May 2013 What do you understand by partition chromatography?
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May 2013 What are the types of liquid chromatography?
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May 2012 What is partition chromatography?
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May 2012 What is chromatography? Discuss its classification.
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Dec 2012 What is chromatography?
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Dec 2012 Discuss classification of chromatography.
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May 2011 What are the advantages of chromatography?
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May 2011 What is chromatography? Discuss the types of chromatography.
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Dec 2011 Give the classification of chromatography.
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May 2010 Explain partition chromatography.
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May 2010 Explain paper chromatography.
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May 2010 Explain thin layer chromatography.
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Dec 2010 How chromatographic separation methods can be classified?
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Dec 2010 Briefly discuss the applications of chromatography.
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May 2007 What are various classes of chromatography? Bring out clearly the principles involved in each case.
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Dec 2007 What are various classes of chromatography? Bring out clearly the principles involved in each case.
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Dec 2006 What are various classes of chromatography? Bring out clearly the principles involved in each case.
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May 2005 How are chromatographic techniques classified? Discuss in brief chromatographic mechanism.
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May 2005 Explain the chromatographic development with suitable example.
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How will distinguish chemically between soft and hard water?Short Answer 2 Marks May-2016 • PTU B-TECH
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May 2018
What is standard hard Water?
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May 2016 What are the major disadvantages of hard water when used for domestic purposes?
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May 2016 What are the major disadvantages of hard water when used for industrial purposes?
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May 2014 What is soft water? Where is it required?
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May 2013 What is standard hard water?
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Dec 2011 What is standard hard water?
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May 2007 What is demineralized water? How is it different from soft water?
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Dec 2006 What is demenralised water? How is it different from soft water?
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Dec 2005 What is demineralized water? How is it different from soft water?
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Despite of the involvement of radiations & matter in both, what are the differences between spectroscopy and photochemistry?Short Answer 2 Marks May-2016 • PTU B-TECH
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May 2018
Despite of the involvement of radiations & matter in both, what are the differences
\r\nbetween spectroscopy and photochemistry? -
May 2017
Despite of the involvement of radiations & matter in both, what are the differences
\r\nbetween spectroscopy and photochemistry?
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How is supercooled water an example of metastable equilibrium?Short Answer 2 Marks May-2016 • PTU B-TECH
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Write a note on photochemistry.Short Answer 2 Marks May-2016 • PTU B-TECH
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Dec 2010 Write short notes on photosensitised reactions.
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Give the number of components, number of phases & number of degrees of freedom in a 9M aqueous solution of sulphuric acid (partly dissociated into hydrogen, bisulphite and sulphate ions) at 1 atm.Short Answer 2 Marks May-2016 • PTU B-TECH
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What is conductivity water? Give its uses.Short Answer 2 Marks May-2016 • PTU B-TECH
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What is the cell reaction occurring in Weston standard cell?Short Answer 2 Marks May-2016 • PTU B-TECH
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May 2018
What is the cell reaction occurring in Weston standard cell?
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What is the significance of molar extinction co-efficient?Short Answer 2 Marks May-2016 • PTU B-TECH
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Dec 2019 What is the physical significance of extinction coefficient?
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Discuss in details different methods for softening of water.Long Answer 8 Marks May-2016 • PTU B-TECH
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Dec 2016 Discuss the cation and anion exchange resins, and their usefulness for water softening.
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Dec 2016 Explain any two methods of water softening.
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May 2014 Describe Zeolite method for softening of water.
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Dec 2012 Describe ion exchange method for softening of water.
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May 2011 Describe Zeolite method for softening of water.
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Dec 2010 Discuss ion exchange method for water softening.
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Dec 2007 Describe the ion exchange process of softening hard water. What are its advantages?
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Discuss in details atmospheric, soil and dry corrosion with involved chemical equations.Long Answer 8 Marks May-2016 • PTU B-TECH
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Describe the instrumentation of HPLC & flow diagram of LC instruments.Long Answer 8 Marks May-2016 • PTU B-TECH
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Dec 2017
Discuss the principle behind liquid chromatography.
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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 redox indicators. What would be the pH of a 0.1M sodium acetate solution when the dissociation constant for acetic acid is 1.8 × 10–5?Long Answer 8 Marks May-2016 • PTU B-TECH
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Write a detailed note on the fate of photochemically excited molecule.Long Answer 8 Marks May-2016 • PTU B-TECH
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What are overtones? Discuss Franck-Condon principle on details.Long Answer 8 Marks May-2016 • PTU B-TECH
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Give the number of lines in ESR spectrum of p -benzoquinone radical anion. Discuss NOE and spin lattice relaxation in NMR.Long Answer 8 Marks May-2016 • PTU B-TECH
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Lead (m.p. 327°C) and Silver (m.p. 961°C) form eutectic mixture at 303°C with 2.6% by weight of silver. Sketch and explain the type of cooling curve expected for 80% by weight of silver, and for 2.6% by weight of silver.Long Answer 8 Marks May-2016 • 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.
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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.