Solved question paper for CHEMISTRY May-2012 (B-TECH 1st-2nd)
Solved Question Paper
Engineering chemistry May-2012
PTU • B-TECH • Mechanical Engineering • 1st-2nd • May-2012
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 happens on absorption of IR radiation by the molecule?Short Answer 2 Marks May-2012 • PTU B-TECH
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Dec 2023 What are rules for molecules show IR activity?
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Dec 2019 What is the essential condition for a molecule to be IR active?
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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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At what wavelength the coloured compounds absorb?Short Answer 2 Marks May-2012 • PTU B-TECH
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Explain temporary and permanent hardness of water.Short Answer 2 Marks May-2012 • PTU B-TECH
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May 2020 How are salts responsible for the temporary and permanent hardness of water? Explain.
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May 2017
SECTION-A
1. Write briefly :
a) Explain temporary and permanent hardness of water.
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May 2013 What salts are responsible for temporary and permanent hardness of water?
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Dec 2012 Name the salts responsible for temporary and permanent hardness of water.
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May 2011 What salts are responsible for temporary and permanent hardness of water?
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Dec 2011 Explain degree of hardness of water.
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Dec 2008 How are salts responsible for the temporary and permanent hardness of water? Explain.
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What is partition chromatography?Short Answer 2 Marks May-2012 • PTU B-TECH
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May 2017
What is partition chromatography?
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May 2016 What is the basic principle of Chromatography? Give various types of liquid 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 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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What is electrode potential?Short Answer 2 Marks May-2012 • PTU B-TECH
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Dec 2017
What is meant by single electrode potential?
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What is galvanic corrosion?Short Answer 2 Marks May-2012 • PTU B-TECH
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Dec 2018 What is waterline corrosion?
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Dec 2016 What is waterline corrosion?
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May 2015 What is Corrosion? Discuss the factors affecting corrosion.
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May 2013 What is differential air corrosion?
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May 2013 What do you understand by stress corrosion? Explain.
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May 2013 What is wet corrosion?
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May 2013 What are the factors which affect corrosion?
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May 2012 What do you understand by Galvanic corrosion?
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May 2011 What is wet corrosion?
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Dec 2011 What do you understand by corrosion and stress corrosion?
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Dec 2010 What is dry corrosion?
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Dec 2010 What do you understand by wet corrosion?
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What are primary and secondary photochemical processes?Short Answer 2 Marks May-2012 • PTU B-TECH
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May 2019 What is meant by photochemical processes?
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May 2019 Give examples of photochemical processes.
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May 2018
What is photochemistry?
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May 2015 What are primary and secondary photochemical processes?
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May 2013 What is photochemistry?
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May 2011 What is photochemistry?
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Dec 2011 What is photosensitization?
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What is chemical shift?Short Answer 2 Marks May-2012 • PTU B-TECH
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May 2013 What do you understand by chemical shift?
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May 2013 What do you understand by chemical shift?
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May 2011 What do you understand by chemical shift?
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Explain Eutectic point.Short Answer 2 Marks May-2012 • PTU B-TECH
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May 2017
Write the definition of Eutectic point.
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May 2011 Define eutectic.
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Give two merits of phase rule.Short Answer 2 Marks May-2012 • PTU B-TECH
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Describe reverse osmosis for desalination of water.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2022 Explain the desalination of water by reverse osmosis method.
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Dec 2017
With the help of a neat diagram, explain reverse osmosis method of desalination.
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Dec 2010 How desalination of water can be achieved by reverse osmosis?
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Discuss hot lime soda process of water softening.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2015 Discuss hot lime soda process of water softening.
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May 2014 Discuss the hot lime-soda process for softening of water.
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May 2013 Discuss Lime-soda process for water softening.
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May 2012 Discuss hot lime soda process of water softening.
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Dec 2011 Discuss hot lime soda process for softening of water. What are its advantages and disadvantages?
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Discuss anodic and cathodic coating for corrosion control.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2023 a) Discuss the importance of design and material selection in controlling corrosion.
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Dec 2019 Discuss briefly about differential aeration corrosion.
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May 2013 Explain the protective measures of controlling corrosion.
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May 2013 Discuss atmospheric corrosion.
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May 2012 Discuss metal alloys for corrosion control.
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Dec 2012 Discuss differential aeration corrosion.
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May 2007 Discuss the importance of design and material selection in controlling corrosion.
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May 2007 Discuss briefly: Stress corrosion
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Dec 2007 Describe various methods employed for protection of metals from corrosion.
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Dec 2006 Discuss the importance of design and material selection in controlling corrosion.
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Dec 2006 Discuss briefly Stress corrosion.
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Explain the mechanism of wet corrosion.Long Answer 4 Marks May-2012 • PTU B-TECH
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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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Dec 2017
Explain the mechanism of electrochemical corrosion with example.
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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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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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What is chromatography? Discuss its classification.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2017
What is partition chromatography?
-
May 2016 What is the basic principle of Chromatography? Give various types of liquid chromatography.
-
Dec 2016 Name the two phases of chromatography.
-
May 2015 What is the basic principle of chromatographic techniques?
-
May 2015 Discuss various types of liquid chromatography.
-
Dec 2015 What is the basic principle of chromatographic techniques?
-
May 2014 What is chromatography?
-
May 2014 Define chromatography. Discuss various types of chromatography.
-
May 2014 Give the applications of chromatography.
-
May 2013 What do you understand by partition chromatography?
-
May 2013 What are the types of liquid chromatography?
-
May 2012 What is partition chromatography?
-
Dec 2012 What is chromatography?
-
Dec 2012 Discuss classification of chromatography.
-
May 2011 What are the advantages of chromatography?
-
May 2011 What is chromatography? Discuss the types of chromatography.
-
Dec 2011 Give the classification of chromatography.
-
May 2010 Explain partition chromatography.
-
May 2010 Explain paper chromatography.
-
May 2010 Explain thin layer chromatography.
-
Dec 2010 How chromatographic separation methods can be classified?
-
Dec 2010 Briefly discuss the applications of chromatography.
-
May 2007 What are various classes of chromatography? Bring out clearly the principles involved in each case.
-
Dec 2007 What are various classes of chromatography? Bring out clearly the principles involved in each case.
-
Dec 2006 What are various classes of chromatography? Bring out clearly the principles involved in each case.
-
May 2005 How are chromatographic techniques classified? Discuss in brief chromatographic mechanism.
-
May 2005 Explain the chromatographic development with suitable example.
-
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What is the significance of R f ? How it can be found experimentally?Long Answer 4 Marks May-2012 • PTU B-TECH
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What is overvoltage? Discuss the factors affecting overvoltage value.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2014 What is over voltage?
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May 2011 Explain the concept of overvoltage.
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Dec 2010 What is over voltage?
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Discuss the concentration cell.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2020 What are concentration cells?
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May 2013 Define concentration cells.
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May 2011 Discuss the concentration cells.
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Calculate the number of moles of HCl(g) produced by absorption of one joule of radiant energy of wavelength 480 nm in the following reaction, if the quantum yield of photochemical reaction is 1.0 × 10 6. H2(g) + Cl2(g) → 2HCl(g)Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2023 b) The quantum efficiency of photochemical reaction: \\r\\nH2 (g) + Cl2 (g) 4 2HCl(g)\\r\\nIs 1.0 x 10^6 with wave length of 480nm. Calculate the number of moles of HCl(g) produced per joule of radiant energy absorbed.
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May 2005 The quantum efficiency of photochemical reaction: H2(g) + Cl2(g) → 2HCl(g) is 1.0 x 10^6 with wavelength of 480 nm. Calculate the number of moles of HCl(g) produced per joule of radiant energy absorbed.
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Discuss the phenomenon of photosynthesis.Long Answer 4 Marks May-2012 • PTU B-TECH
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Dec 2015 Discuss various theories of mechanism of photosynthesis.
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May 2013 Write short note on Photosynthesis.
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May 2011 Describe mechanism of photosynthesis.
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May 2005 What is meant by photosynthesation?
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Dec 2005 Explain photosynthesis.
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Explain the uses of UV-visible spectroscopy.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2017
Explain the selection rules of UV-vis Spectroscopy.
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Dec 2016 What is ultraviolet and visible spectroscopy known as?
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May 2014 What information can be obtained from the UV-Vis spectrum?
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Dec 2014 Explain the selection rules of UV-vis spectroscopy.
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Dec 2014 Explain the selection rule of UV-vis Spectroscopy.
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Dec 2012 Describe the principle of UV-Vis spectroscopy.
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Dec 2011 Discuss theory of UV-visible spectroscopy.
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Dec 2011 Discuss the principle of UV/Visible spectroscopy.
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Dec 2010 Discuss the theory of UV-visible spectroscopy.
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May 2005 What do you understand by UV spectroscopy?
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Discuss the factors responsible for intensity of spectral lines.Long Answer 4 Marks May-2012 • PTU B-TECH
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Dec 2016 What do you understand by natural linewidth of a spectral line?
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Dec 2016 Discuss the factors responsible for intensity of spectral lines.
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May 2012 Discuss factors contributing to the broadening of a spectral line.
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May 2010 Explain processes that contribute to the finite width of a spectral line.
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May 2008 Explain processes which contribute to the finite width of a spectral line.
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Dec 2005 Explain the line width of spectra.
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Draw and explain the splitting pattern observed in the 1HNMR of CHBr2CH2Br?Long Answer 4 Marks May-2012 • PTU B-TECH
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Discuss spin-lattice relaxation.Long Answer 4 Marks May-2012 • PTU B-TECH
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May 2018
Discuss spin-lattice relaxations. What is their significance?
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May 2013 Discuss spin-spin relaxation.
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Dec 2010 Discuss spin-lattice relaxation.
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Draw and explain the phase diagram of carbon.Long Answer 8 Marks May-2012 • 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.