Solved question paper for CHEMISTRY May-2020 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry May-2020
PTU • B-TECH • Information Technology • 1st-2nd • May-2020
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
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Which have high melting point and why: HgCl2 or CaCl2?Very Short Answer 2 Marks May-2020 • PTU B-TECH
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Why is TMS used as an internal standard in NMR spectroscopy?Very Short Answer 2 Marks May-2020 • PTU B-TECH
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May 2014 What is the purpose of using TMS in recording ^1H NMR spectrum?
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May 2010 Why is TMS used as an internal standard for NMR?
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Dec 2007 Why is TMS used as an internal standard in NMR spectroscopy?
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Define e.m.f. of cell.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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Dec 2009 Define emf. How is the emf of a cell determined?
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Write down the equation of state of real gas.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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Give cis and trans notation to the following compound i.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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May 2020 Give cis and trans notation to the following compound ii.
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Give cis and trans notation to the following compound ii.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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May 2020 Give cis and trans notation to the following compound i.
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How do you explain anomalous electronic configuration of Cu (4s1 3d10)?Very Short Answer 2 Marks May-2020 • PTU B-TECH
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Can oxidation state be negative? Discuss.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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May 2019 Can oxidation state be negative? Discuss.
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Dec 2019 Can oxidation state be negative? Discuss.
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Give one example of hard acid and one example of soft acid.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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What is isomerism?Very Short Answer 2 Marks May-2020 • PTU B-TECH
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Dec 2019 What is isomerism?
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For a cell reaction A(s) + 2B(aq) → A2+(aq) + 2B(s) at 298 K, the equilibrium constant is 1.0 × 10^30. Calculate E°cell.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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May 2007 For a cell reaction A(s) + 2B(aq) → A2+(aq) + 2B(s) at 298 K, the equilibrium constant is 1.0 × 10^4. Calculate E0cell.
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Dec 2006 For a cell reaction A(s) + 2B(aq) → A2+(aq) + 2B(s) at 298 K, the equilibrium constant is 1.0 x 10^4. Calculate E0cell.
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Solve the Schrödinger wave equation for particle in one-dimensional box.Long Answer 6 Marks May-2020 • PTU B-TECH
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Give the physical meaning of wave function.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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May 2019 Give the physical meaning of wave function.
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Dec 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 8 Marks May-2020 • PTU B-TECH
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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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Dec 2019 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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What are van der Waals forces? Discuss them briefly.Short Answer 5 Marks May-2020 • PTU B-TECH
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May 2019 How do van der Waals interactions occur?
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Dec 2019 How do Vander Waals interactions occur?
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The van der Waals constants of a gas are a = 0.751 dm^6 atm mol^-2 and b = 0.0226 dm^3 mol^-1. Calculate critical constants.Short Answer 3 Marks May-2020 • PTU B-TECH
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May 2019 The van der Waals constants of a gas are: a = 0.751 dm6 atm mol−2 and b = 0.0226 dm3 mol−1. Calculate critical constants.
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Explain principles of UV-Vis spectroscopy. How do you distinguish between different types of transitions involved in UV-Vis spectroscopy?Short Answer 5 Marks May-2020 • PTU B-TECH
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May 2020 How do you distinguish between different types of transitions involved in UV-Vis spectroscopy?
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Dec 2008 How do you distinguish between different types of transitions involved in UV-VIS spectrophotometry?
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On the basis of IR spectroscopy, how can you distinguish between alkane, alkene and alkyne?Short Answer 3 Marks May-2020 • PTU B-TECH
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On the basis of IR spectroscopy, how can you distinguish between aldehyde and ketone?Short Answer 3 Marks May-2020 • PTU B-TECH
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Derive Nernst equation.Short Answer 4 Marks May-2020 • PTU B-TECH
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Dec 2019 Write down the Nernst equation and define electric potential.
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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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Calculate the mean ionic activity coefficients of 0.1 mol/kg HCl, given the e.m.f. of the cell H2(1 atm)/HCl(a), AgCl(s)/Ag is 0.3524 V and that standard electrode potential of Ag-AgCl is 0.2224 V at 25°C.Short Answer 4 Marks May-2020 • PTU B-TECH
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May 2018
Derive Nernst equation. Calculate the mean ionic activity co-efficients of 0.1 moL/Kg HCI, given the emf of the cell
\r\n H2 (latm)/ HCI (a), AgCI (s)/Ag
\r\nis 0.3524V and that standard electrode potential of Ag-AgCl is 0.2224V @25°C.
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Discuss the molecular geometry of BC.Short Answer 4 Marks May-2020 • PTU B-TECH
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Dec 2019 Discuss the molecular geometry of BC3.
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Discuss the molecular geometry of PCl5.Short Answer 4 Marks May-2020 • PTU B-TECH
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May 2019 Discuss the molecular geometries of the following: i) BCl3 ii) PCl5.
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Dec 2019 Discuss the molecular geometry of PCl5.
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What is effective nuclear charge?Very Short Answer 2 Marks May-2020 • PTU B-TECH
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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 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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Which element has the highest effective nuclear charge?Very Short Answer 2 Marks May-2020 • PTU B-TECH
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May 2020 What is 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 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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What is ionization energy?Very Short Answer 2 Marks May-2020 • PTU B-TECH
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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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Dec 2019 What is ionization energy? Which elements have the highest ionization energy?
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Which elements have the highest ionization energy?Very Short Answer 2 Marks May-2020 • PTU B-TECH
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May 2020 What is ionization energy?
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May 2019 What is ionization energy? Which elements have the highest ionization energy?
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Dec 2019 What is ionization energy? Which elements have the highest ionization energy?
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Define chirality.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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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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Dec 2019 Define diastereomers.
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Define enantiomers.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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May 2020 Define chirality.
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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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Dec 2019 Define diastereomers.
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Define diastereomers.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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May 2020 Define chirality.
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May 2020 Define enantiomers.
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Dec 2019 Define chirality.
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Dec 2019 Define enantiomers.
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Dec 2019 Define diastereomers.
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Define optical activity.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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Dec 2019 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 a suitable example.Short Answer 4 Marks May-2020 • PTU B-TECH
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Dec 2019 Discuss the synthesis of a commonly used drug molecule by taking suitable ma
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Write short note on oxidation reactions.Very Short Answer 2 Marks May-2020 • PTU B-TECH
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Write short note on ring opening reactions.Very Short Answer 2 Marks May-2020 • 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.
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.