Solved question paper for CHEMISTRY Dec-2009 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry Dec-2009
PTU • B-TECH • Information Technology • 1st-2nd • Dec-2009
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-
Cause of chemical shift in NMR.Very Short Answer 2 Marks Dec-2009 • PTU B-TECH
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May 2023 Write briefly: a) Cause of chemical shift in NMR.
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Specifications for water to be used for drinking purpose.Short Answer 2 Marks Dec-2009 • PTU B-TECH
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What is priming and foaming?Very Short Answer 2 Marks Dec-2009 • PTU B-TECH
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May 2013 What is priming and foaming? Explain.
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Difference between Galvanic cell and Electrolytic cell.Short Answer 2 Marks Dec-2009 • PTU B-TECH
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May 2023 Write briefly: b) Difference between Galvanic cell and Electrolytic cell.
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Corrosion is reverse to extraction. Justify.Short Answer 2 Marks Dec-2009 • PTU B-TECH
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May 2010 Corrosion is reverse to extraction. Explain.
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What is meant by metastable equilibrium?Very Short Answer 2 Marks Dec-2009 • PTU B-TECH
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May 2018
What are the differences between stable and metastable equilibrium?
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Photosensitized reactions?Very Short Answer 2 Marks Dec-2009 • PTU B-TECH
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Dec 2008 Photosensitized reactions.
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Difference between GC and HPLC technique of chromatography.Short Answer 2 Marks Dec-2009 • PTU B-TECH
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Cause of alkalinity of sea water.Very Short Answer 2 Marks Dec-2009 • PTU B-TECH
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Advantages and limitations of lime soda process.Short Answer 2 Marks Dec-2009 • PTU B-TECH
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Describe method involved in treatment of water required for industries.Long Answer 4 Marks Dec-2009 • PTU B-TECH
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May 2023 b) Describe method involved in the treatment of water required for industries.
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State any two difference between hot and cold lime soda process.Short Answer 4 Marks Dec-2009 • PTU B-TECH
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What is soil corrosion? What are the factors that affects soil corrosion?Long Answer 4 Marks Dec-2009 • PTU B-TECH
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Dec 2010 Define corrosion. Describe soil corrosion.
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Explain mechanism of rusting of iron in acidic and neutral environment.Long Answer 4 Marks Dec-2009 • PTU B-TECH
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May 2017
a) Explain the electrochemical mechanism of rusting of iron in humid atmosphere.
\r\nb) Discuss protective measure for controlling corrosion. -
Dec 2014 Explain the electrochemical mechanism of rusting of iron in humid atmosphere.
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Dec 2014 Explain the electrochemical mechanism of rusting of iron in humid atmosphere. Discuss any four factors that affect the rate of corrosion.
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Dec 2005 Explain “rusting of Iron” with the help of electrochemical theory of corrosion.
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Describe various kinds of supports used in columns and their properties.Long Answer 4 Marks Dec-2009 • PTU B-TECH
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Give schematic diagram of HPLC apparatus showing various parts.Short Answer 4 Marks Dec-2009 • PTU B-TECH
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Define emf. How is the emf of a cell determined?Short Answer 4 Marks Dec-2009 • PTU B-TECH
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May 2020 Define e.m.f. of cell.
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Derive an expression for the emf of a concentration cell.Long Answer 4 Marks Dec-2009 • PTU B-TECH
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What do you understand by term spin-spin coupling? Is the coupling constant independent of the applied field or depend on it?Short Answer 4 Marks Dec-2009 • PTU B-TECH
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Indicate diagrammatically the splitting of signals in NMR spectra of CH3Br-CHBr2, CH3-CHBr2 and CH3-CH2Br.Short Answer 4 Marks Dec-2009 • PTU B-TECH
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What type of molecules give pure rotational spectra? Derive expression for frequency of rotational lines.Long Answer 4 Marks Dec-2009 • PTU B-TECH
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What type of molecules exhibit vibrational-rotational spectra and why?Short Answer 4 Marks Dec-2009 • PTU B-TECH
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How does CO2 system differ from water system?Short Answer 4 Marks Dec-2009 • PTU B-TECH
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Explain the terms Eutectic point, Eutectic composition, constant boiling mixture, triple point.Short Answer 4 Marks Dec-2009 • PTU B-TECH
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A sample of gaseous HI was irradiated by light of wavelength 253.7 nm when 307 J of energy was found to decompose 1.30 x 10^-3 moles of HI. Calculate quantum yield for the dissociation of HI.Short Answer 4 Marks Dec-2009 • PTU B-TECH
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State and explain Einstein law of photochemical equivalence. What is meant by quantum yield of a photochemical process.Long Answer 4 Marks Dec-2009 • 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 2012 What is meant by quantum yield of a photochemical reaction? Explain.
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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.
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.