Solved question paper for CHEM May-2020 (DIPLOMA 1st-2nd)
Solved Question Paper
Chemistry May-2020
PSBTE • DIPLOMA • Information Technology • 1st-2nd • May-2020
CHEM (chemistry) for Punjab State Board of Technical Education Diploma in Engineering 1st-2nd semester students is collected here as subject-wise previous year question papers and old papers for quick revision. Students can use these PYQ papers to understand the exam pattern, check repeated questions, and prepare important topics in a simple, semester-wise way. This page helps you find and download diploma question paper PDFs for CHEM and review common unit-wise questions before exams. BRpaper is not the official website of the Punjab State Board of Technical Education, and the papers here are meant for study reference and exam preparation only.
Solved Questions
Solved-
Differentiate between roasting and calcinations.Short Answer 5 Marks May-2020 • PSBTE DIPLOMA
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May 2019 Distinguish between roasting and calcinations.
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May 2019 Differentiate between roasting and calcination.
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What are the characteristics of a good fuel?Short Answer 5 Marks May-2020 • PSBTE DIPLOMA
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May 2019 What are characteristics of a good fuel?
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May 2019 What are the characteristics of a good fuel?
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Dec 2018 What are the characteristics of a good fuel?
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Dec 2018 What are the characteristics of a good fuel?
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Dec 2017
What are fuels? Give the characteristics of good fuel.
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Dec 2016
What is fuel? What are the characteristic of good fuel?
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Dec 2015 What are the characteristics of a good fuel?
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Dec 2011 What are the characteristics of a good fuel?
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What are ferrous and non-ferrous alloys? Give examples.Short Answer 5 Marks May-2020 • PSBTE DIPLOMA
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May 2019 What is an alloy? What are ferrous and non-ferrous alloys?
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What is Galvanization? How it is done?Short Answer 5 Marks May-2020 • PSBTE DIPLOMA
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May 2021 What is galvanization of iron? Explain.
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May 2021
What is galvanization?
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May 2019 Write brief note on galvanization.
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May 2019 What is galvanization?
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Dec 2018 Define the term galvanization.
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Dec 2018 Define the term galvanization.
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What are the constituents of paint?Short Answer 5 Marks May-2020 • PSBTE DIPLOMA
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May 2019 What are the constituents of paint?
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Dec 2018 Name the various constituents of paint.
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Dec 2018 Name the various constituents of paint.
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May 2015 Name the various constituents of paint.
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Dec 2015 Name various constituents of paint.
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Write a short note on greases.Short Answer 5 Marks May-2020 • PSBTE DIPLOMA
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What is difference between corrosion and erosion?Short Answer 5 Marks May-2020 • PSBTE DIPLOMA
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May 2021 Define corrosion? How is it different from erosion?
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Dec 2018 What is the difference between erosion and corrosion?
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Dec 2018 What is the difference between erosion and corrosion?
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Dec 2017
Define erosion. How it is different from corrosion?
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May 2015 Define corrosion. How is it different from erosion?
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Dec 2015 How is erosion different from corrosion?
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What are the functions of lubricants?Short Answer 5 Marks May-2020 • PSBTE DIPLOMA
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May 2021 What are the characteristics of a good lubricant?
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May 2021
What are the functions of a lubricant?
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May 2019 What are the functions of a lubricant?
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May 2019 What are the functions of a lubricant?
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Dec 2018 What are the characteristics of a good lubricant?
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Dec 2018 What are the characteristics of a good lubricant?
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Dec 2017
What are functions of lubricants?
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Dec 2017
What are lubricants? How are they classified?
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Dec 2016
Define the term lubricant? What are the function of lubricant?
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May 2015 What are the characteristics of a good lubricant?
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May 2015 What are lubricants?
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Dec 2015 What are the functions of lubricants?
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What are the sources of water pollution?Short Answer 5 Marks May-2020 • PSBTE DIPLOMA
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May 2016
What is air pollution? Give the sources of water pollution.
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Dec 2016
What is water Pollution? Give the sources of water pollution?
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Dec 2015 What is water pollution?
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Dec 2015 Give the sources of water pollution.
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Dec 2011 Give three main causes of water pollution.
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What are addition and condensation polymers? Give examples.Short Answer 5 Marks May-2020 • PSBTE DIPLOMA
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May 2021
Define addition and condensation polymerization. Give one example of each.
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Dec 2018 Explain addition polymers with examples.
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Dec 2018 Explain condensation polymers with examples.
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Dec 2018 Explain addition polymers with examples.
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Dec 2018 Explain condensation polymers with examples.
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May 2016
Explain addition and condensation polymers.
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May 2015 Explain addition and condensation polymers.
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Dec 2011 Explain condensation polymerization using nylon as an example.
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Explain the Open Hearth Process for the manufacturing of steel with well labeled diagram and chemical reactions involved.Long Answer 10 Marks May-2020 • PSBTE DIPLOMA
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What is corrosion? Explain the mechanism rusting of iron by electrochemical corrosion in detail.Long Answer 10 Marks May-2020 • PSBTE DIPLOMA
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May 2015 Explain the rusting of iron with the help of electrochemical theory of corrosion.
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Dec 2011 Explain rusting of iron using electro-chemical theory (when cathodic area > anodic area).
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Give the composition and uses of gun metal and brass.Long Answer May-2020 • PSBTE DIPLOMA
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May 2015 Describe the composition and uses of nichrome and gun metal.
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May 2015 Describe the properties and uses of Gun metal.
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Dec 2015 Describe the composition and uses of Gun metal.
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Explain fluid film mechanism of lubrication.Long Answer May-2020 • PSBTE DIPLOMA
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May 2021 Discuss in detail the mechanism of lubrication.
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May 2019 Explain the mechanism of hydrodynamic lubrication.
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What is Buna-s? What are its uses?Long Answer May-2020 • PSBTE DIPLOMA
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May 2015 What is Buna-S?
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Explain Global warming.Long Answer May-2020 • PSBTE DIPLOMA
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May 2019 Explain green house effect and global warming.
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Dec 2018 Explain greenhouse effect.
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Dec 2018 Explain greenhouse effect.
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Dec 2017
Explain green house effect and global warming.
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May 2015 Explain greenhouse effect.
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May 2015 Explain global warming.
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Dec 2015 Explain global warming.
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FAQ
Frequently Asked Questions
Answers about this subject, solved papers, and preparation.
01 Where can I find CHEM previous year question papers for PSBTE Diploma?
You can use this CHEM subject page to find subject-wise previous year question papers for the PSBTE Diploma in Engineering 1st-2nd semester.
02 Can I download CHEM diploma question paper PDF from this page?
This page is meant to help students locate CHEM question paper PDFs and old papers for study and revision.
03 Are solved CHEM question papers available here?
Students often search for solved papers, but this page is mainly for previous year question papers and exam preparation material.
04 How do CHEM old papers help in exam preparation?
Old CHEM papers help you understand the exam pattern, spot repeated questions, and revise important units before the exam.
05 Is BRpaper the official website of Punjab State Board of Technical Education?
No. BRpaper is not the official website of Punjab State Board of Technical Education; it is a study reference page for question papers.