Solved question paper for CHEMISTRY Dec-2019 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry Dec-2019
PTU • B-TECH • Information Technology • 1st-2nd • Dec-2019
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 do you understand by effective nuclear charge?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 What is effective nuclear charge?
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May 2020 Which element has the highest effective nuclear charge?
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May 2019 What is effective nuclear charge? Which element has the highest effective nuclear charge?
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Dec 2019 What is effective nuclear charge? Which element has the highest effective nuclear charge?
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Dec 2018
What do you understand by effective nuclear charge?
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Why d and f orbital show poor shielding effect?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2019 Why do d and f orbitals show poor shielding effect?
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What is the essential condition for a molecule to be IR active?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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Dec 2023 What are rules for molecules show IR activity?
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Dec 2018
What is the essential condition for a molecule to be IR active?
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May 2013 What is the essential requirement for the compound to be IR active? Discuss the applications of IR spectroscopy.
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May 2012 What happens on absorption of IR radiation by the molecule?
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What is isomerism?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 What is isomerism?
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How do Vander Waals interactions occur?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 What are van der Waals forces? Discuss them briefly.
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May 2019 How do van der Waals interactions occur?
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Can oxidation state be negative? Discuss.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 Can oxidation state be negative? Discuss.
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May 2019 Can oxidation state be negative? Discuss.
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How many signals would you expect to see in the 1H NMR spectrum of the following compound?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 How many signals would you expect to see in the ¹H NMR spectrum of the following compounds?
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May 2020 How many NMR signals are observed in the spectrum of CH3-CH2-CH2CH3?
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Dec 2018
How many signals would you expect to see in the 1H NMR spectrum of the following :
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Dec 2008 Indicate the number and type of 1H-NMR signals expected in CH3-CH=CH2.
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Dec 2005 How many NMR signals are observed in the spectrum of CH3-CH2-◊-CH2CH3?
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Dec 2005 How many NMR signals are observed in the spectrum of CH3CH2CH3?
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What are the shapes of PCl5 and H2O?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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Define entropy and Gibbs free energy.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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Write down the Nernst equation and define electric potential.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 Derive Nernst equation.
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May 2015 Derive Nernst equation and give its significance.
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Dec 2015 Derive Nernst equation and give its significance.
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Dec 2012 Discuss Nernst\'s equation for electrode potential and emf of cell.
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May 2011 Describe emf of electrochemical cell by taking suitable example.
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May 2007 What is Nernst equation? Write its applications.
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Dec 2006 What is Nernst equation? Write its applications.
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Dec 2005 Derive Nernst equation and give its significance.
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Obtain the time-dependent Schrödinger wave equation for a particle.Long Answer 6 Marks Dec-2019 • PTU B-TECH
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May 2019 Obtain the time-dependent Schrodinger wave equation for a particle.
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Give the physical meaning of wave function.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 Give the physical meaning of wave function.
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May 2019 Give the physical meaning of wave function.
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What is crystal field theory? How does this theory account for the fact that [CoF6] is paramagnetic but [Co(NH3)6] is diamagnetic though both are octahedral?Long Answer 6 Marks Dec-2019 • PTU B-TECH
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May 2020 What is crystal field theory? How does this theory account for the fact that [CoF6] is paramagnetic but [Co(NH3)6] is diamagnetic though both are octahedral?
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May 2019 What is crystal field theory? How does this theory account for the fact that [CoF6]3− is paramagnetic but [Co(NH3)6]3+ is diamagnetic though both are octahedral?
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Discuss the role of doping on the band structure of solids.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2019 Discuss the role of doping on the band structure of solids.
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Derive the van der Waals equation for describing P-V-T relationship in real gases.Long Answer 5 Marks Dec-2019 • PTU B-TECH
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May 2019 Derive the van der Waals equation for describing P-V-T relationship in real gases.
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Explain the different types of molecular forces.Short Answer 3 Marks Dec-2019 • PTU B-TECH
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Calculate the solubility product of AgBr in water at 25°C from the cell given.Long Answer 4 Marks Dec-2019 • PTU B-TECH
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Calculate the standard free energy change (ΔG°) of the reaction and state whether this reaction is feasible at standard state.Long Answer 4 Marks Dec-2019 • PTU B-TECH
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Discuss the molecular geometry of BC3.Short Answer 4 Marks Dec-2019 • PTU B-TECH
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May 2020 Discuss the molecular geometry of BC.
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Discuss the molecular geometry of PCl5.Short Answer 4 Marks Dec-2019 • PTU B-TECH
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May 2020 Discuss the molecular geometry of PCl5.
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May 2019 Discuss the molecular geometries of the following: i) BCl3 ii) PCl5.
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What is effective nuclear charge? Which element has the highest effective nuclear charge?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 What is effective nuclear charge?
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May 2020 Which element has the highest effective nuclear charge?
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May 2019 What is effective nuclear charge? Which element has the highest effective nuclear charge?
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Dec 2019 What do you understand by effective nuclear charge?
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Dec 2018
What do you understand by effective nuclear charge?
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What is ionization energy? Which elements have the highest ionization energy?Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 What is ionization energy?
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May 2020 Which elements have the highest ionization energy?
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May 2019 What is ionization energy? Which elements have the highest ionization energy?
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Define chirality.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 Define chirality.
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May 2020 Define enantiomers.
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May 2020 Define diastereomers.
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Dec 2019 Define enantiomers.
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Dec 2019 Define diastereomers.
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Define enantiomers.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 Define chirality.
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May 2020 Define enantiomers.
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May 2020 Define diastereomers.
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Dec 2019 Define chirality.
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Dec 2019 Define diastereomers.
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Define diastereomers.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 Define chirality.
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May 2020 Define enantiomers.
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May 2020 Define diastereomers.
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Dec 2019 Define chirality.
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Dec 2019 Define enantiomers.
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Define optical activity.Short Answer 2 Marks Dec-2019 • PTU B-TECH
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May 2020 Define optical activity.
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Dec 2018
What is optical activity?
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Discuss the synthesis of a commonly used drug molecule by taking suitable maLong Answer 4 Marks Dec-2019 • PTU B-TECH
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May 2020 Discuss the synthesis of a commonly used drug molecule by taking a suitable example.
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Discuss the SN2 mechanism of alkyl halides in terms of kinetics, stereochemistry and reactivity of alkyl halides.Long Answer 4 Marks Dec-2019 • PTU B-TECH
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May 2019 Explain SN2 mechanism by taking an example of alkyl halide as a substrate.
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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?
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02 Are these official Punjab Technical University question papers?
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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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