Solved question paper for CHEM May-2016 (DIPLOMA 1st-2nd)

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Solved Question Paper

Chemistry May-2016

PSBTE • DIPLOMA • Computer Engineering • 1st-2nd • May-2016

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.

Question papers (year-wise) Solutions

Solved Questions

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SECTION A

Q. 1 Fill in the blanks

a. Important ore of iron is_____________.

Very Short Answer 1x10=10 Marks May-2016 • PSBTE DIPLOMA

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Sulphide ores are concentrated by ______________process.

Very Short Answer May-2016 • PSBTE DIPLOMA

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May 2019 Sulphide ores are concentrated by ____________ process.

May 2019 Sulphide ores are concentrated by _______process.

May 2015 Sulphide ores are concentrated by _________.
The process of depositing Zinc on iron is called___________

Very Short Answer May-2016 • PSBTE DIPLOMA

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Producer gas is a mixture of CO & _____________.

Very Short Answer May-2016 • PSBTE DIPLOMA

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Dec 2018 Producer gas is a mixture of CO and _______.

Dec 2018 Producer gas is a mixture of CO and _______

May 2017
Producer gas is a mixture of ______.

Dec 2016
Producer gas is mixture of ............ and .................... .

May 2015 Producer gas is a mixture of _________ and ___________.

Percentage of fixed carbon can be determined by ___________ analysis.

Very Short Answer May-2016 • PSBTE DIPLOMA

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A good lubricant should have ________flash point.

Very Short Answer May-2016 • PSBTE DIPLOMA

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May 2018
A good lubricant should have …………………… flash point.

Dec 2018 A good lubricant should have _______ boiling point.

Dec 2018 A good lubricant should have _______ boiling point.

May 2015 A good lubricant should have ________ flash point.
In a paint, gypsum is used as__________

Very Short Answer May-2016 • PSBTE DIPLOMA

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Dec 2017
In paint, gypsum is used as ___________.
Fire clay bricks are ________ in nature.

Very Short Answer May-2016 • PSBTE DIPLOMA

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Polythene is a ____ polymer.

Very Short Answer May-2016 • PSBTE DIPLOMA

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Carbon monoxide is ___________ toxic than CO2

Very Short Answer May-2016 • PSBTE DIPLOMA

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Dec 2016
Carbon monoxide is ............. toxic than CO2.
2 State True or False

a. Percentage of carbon is more in wrought iron than steel.

Very Short Answer 1x5=5 Marks May-2016 • PSBTE DIPLOMA

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Solder is an example of ferrous alloy.

Very Short Answer May-2016 • PSBTE DIPLOMA

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Graphite is an example of natural refractory.

Very Short Answer May-2016 • PSBTE DIPLOMA

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Rubber is a natural polymer.

Very Short Answer May-2016 • PSBTE DIPLOMA

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May 2019 Natural rubber is a polymer of _______.

Dec 2015 Natural rubber is a polymer of _________.

Dec 2011 Natural rubber is an elastomer.
The intensity of noise is measured in decibel.

Very Short Answer May-2016 • PSBTE DIPLOMA

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SECTION B

Q.2 Attempt any SIX questions:

(i) Explain Froth floatation process for the concentration of sulphide ore.

Short Answer 6x5=30 Marks May-2016 • PSBTE DIPLOMA

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May 2017
SECTION – B

Q2. Attempt any ten questions.

a. Explain Froth flotation process for the concentration of sulphide ores.

Dec 2017
SECTION-B

Q3. Attempt any six questions.

a. Explain Froth floation process for the concentration of sulphide ore.

Define the terms gangue, flux, slag, ore and mineral.

Short Answer May-2016 • PSBTE DIPLOMA

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May 2019 Define: Mineral, Ore, Metallurgy, Gangue, Flux.

Dec 2018 Define: metallurgy, mineral, ore, gangue, and flux.
What are the factors which influence the rate of corrosion?

Short Answer May-2016 • PSBTE DIPLOMA

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May 2021 Give a detail account of factors influencing the rate of corrosion.

May 2019 What do you understand by corrosion?

May 2019 What are the factors that influence the rate of corrosion?

May 2017
What is the cause of corrosion?

May 2016
What are the causes and disadvantages of boiles corrosion?

May 2015 What are the factors which influence the rate of corrosion?

Dec 2015 What is the cause of corrosion?
What is water gas? Give its composition and uses.

Short Answer May-2016 • PSBTE DIPLOMA

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Dec 2018 Give composition and uses of water gas.

Dec 2018 Give composition and uses of water gas.

May 2015 What is a water gas? Give its composition and uses.

May 2015 What is water gas?

May 2015 Give the composition and uses of water gas.
Define greases. Give applications of greases.

Short Answer May-2016 • PSBTE DIPLOMA

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What are the characteristics of a good paint?

Short Answer May-2016 • PSBTE DIPLOMA

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May 2019 What are the characteristics of a good paint?

May 2015 What is paint? State main characteristics of a good paint.
Differentiate between thermoplastics and thermosetting plastics.

Short Answer May-2016 • PSBTE DIPLOMA

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May 2019 Distinguish between thermoplastics and thermosetting plastics.

May 2019 Differentiate between thermoplastics and thermosetting plastics.

Dec 2018 What is the difference between thermoplastic and thermosetting polymers?

Dec 2018 What is the difference between thermoplastic and thermosetting polymers?

May 2017
Differentiate between thermoplastics and thermosetting plastics.

Dec 2017
Difference between thermoplastic and thermosetting plastics?

Dec 2016
Differentiate between thermoplastic and thermosetting plastic with example?

May 2015 Differentiate between thermoplastics and thermosetting plastics with example.

Dec 2011 Differentiate between thermoplastics and thermosetting plastics.
Explain addition and condensation polymers.

Short Answer May-2016 • PSBTE DIPLOMA

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May 2021
Define addition and condensation polymerization. Give one example of each.

May 2020 What are addition and condensation polymers? Give examples.

Dec 2018 Explain addition polymers with examples.

Dec 2018 Explain condensation polymers with examples.

Dec 2018 Explain addition polymers with examples.

Dec 2018 Explain condensation polymers with examples.

May 2015 Explain addition and condensation polymers.

Dec 2011 Explain condensation polymerization using nylon as an example.
What is air pollution? Give the sources of water pollution.

Short Answer May-2016 • PSBTE DIPLOMA

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May 2020 What are the sources of water pollution?

Dec 2016
What is water Pollution? Give the sources of water pollution?

Dec 2015 What is water pollution?

Dec 2015 Give the sources of water pollution.

Dec 2011 Give three main causes of water pollution.

SECTION C

Q. 3 Attempt any FIVE questions:

(i) What is an alloy? Describe the composition and uses of German silver and Nichrome.

Long Answer 5x6=30 Marks May-2016 • PSBTE DIPLOMA

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Write a short note on metal cladding and metal spraying.

Long Answer May-2016 • PSBTE DIPLOMA

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Dec 2017
Write a short note on metal cladding and metal spraying.
Describe classification of fuel.

Long Answer May-2016 • PSBTE DIPLOMA

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May 2015 Define fuels. How are they classified?

May 2015 What are fuels?
Define oiliness, saponification value, volatility, emulsification, cloud point and pour point.

Long Answer May-2016 • PSBTE DIPLOMA

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May 2015 Define emulsification, saponification value, iodine value, flash point, fire point and pour point.

What are refractories? Give characteristics of a good refractory material.

Long Answer May-2016 • PSBTE DIPLOMA

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May 2021 What is a refractory material?

May 2018
What are the main characteristics of a good refractory?

Dec 2018 What are the characteristics of a good refractory material?

Dec 2018 What are the characteristics of a good refractory material?

May 2017
What are the characteristics of a good refractory material?

May 2015 What are the characteristics of good refractory material?
Give the preparation and uses of Natural rubber and PVC.

Long Answer May-2016 • PSBTE DIPLOMA

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Describe primary and secondary pollutants, biodegradable and non Biodegradable pollutants.

Long Answer May-2016 • PSBTE DIPLOMA

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May 2015 Describe primary and secondary pollutants, biodegradable and non-biodegradable pollutants.
Explain coal gas and Biogas.

Long Answer May-2016 • PSBTE DIPLOMA

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FAQ

Frequently Asked Questions

Answers about this subject, solved papers, and preparation.

Updated regularly

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.

Solved question paper for CHEM May-2016 (DIPLOMA 1st-2nd)

Chemistry May-2016

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