Solved question paper for CHEM May-2018 (DIPLOMA 1st-2nd)

Solved Question Paper

Chemistry May-2018

PSBTE • DIPLOMA • ECE(Industry Integrated) • 1st-2nd • May-2018

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

Q1. a) Fill in the blanks:

i. 1 degree Clark means ……………….. .

Very Short Answer 15x1=15 Marks May-2018 • PSBTE DIPLOMA

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Dec 2011 1 degree Clark means ___________.
Water is a ……………… solvent.

Very Short Answer May-2018 • PSBTE DIPLOMA

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May 2015 Water is a ___________ solvent.
The process employed to concentrate an ore is called ………………….. .

Very Short Answer May-2018 • PSBTE DIPLOMA

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Dec 2015 Oxide ores are concentrated by ______________ process.
Cementation is the process of …………………. .

Very Short Answer May-2018 • PSBTE DIPLOMA

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Galvanization is the process of depositing ……………………. on iron.

Very Short Answer May-2018 • PSBTE DIPLOMA

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Dec 2017
Galvanizing is the process of depositing __________on ions.
In combustion of fuels ……………………… reactions occur.

Very Short Answer May-2018 • PSBTE DIPLOMA

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May 2015 In the combustion of fuel _____ reaction occurs.
Gun powder is a mixture of …………….. .

Very Short Answer May-2018 • PSBTE DIPLOMA

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May 2016
Gunpowder is a mixture.
The unit of viscosity is ……………………. .

Very Short Answer May-2018 • PSBTE DIPLOMA

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May 2019 The unit of viscosity is _______.

Dec 2018 Units of viscosity are _______.

Dec 2018 Units of viscosity are _______

May 2017
The unit of viscosity is ______.

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

Very Short Answer May-2018 • PSBTE DIPLOMA

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Dec 2018 A good lubricant should have _______ boiling point.

Dec 2018 A good lubricant should have _______ boiling point.

May 2016
A good lubricant should have ________flash point.

May 2015 A good lubricant should have ________ flash point.
Acid Refractoriness are resistant to ………........

Very Short Answer May-2018 • PSBTE DIPLOMA

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Dec 2016
Acid refractories are resistant to ..............
State True or False.

xi. Hard water does not give lather with soap.

Very Short Answer May-2018 • PSBTE DIPLOMA

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Dec 2016
State True or False

1. Hard water does not give lather with soap.
All ores are minerals.

Very Short Answer May-2018 • PSBTE DIPLOMA

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May 2015 All ores are minerals.

Noble gases undergo corrosion.

Very Short Answer May-2018 • PSBTE DIPLOMA

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May 2019 Noble gases cause corrosion.
A good fuel has low calorific.

Very Short Answer May-2018 • PSBTE DIPLOMA

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Dec 2018 A good fuel has _______ calorific value.

Dec 2018 A good fuel has _______ calorific value.

Dec 2017
A good fuel has low calorific value.
Viscosity index of oil can be increased by adding acid

Very Short Answer May-2018 • PSBTE DIPLOMA

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SECTION-B

Q2. Attempt any six questions.

a. What are the requisites of water for drinking purposes?

Short Answer 6x5=30 Marks May-2018 • PSBTE DIPLOMA

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What is the difference between metal and ore?

Short Answer May-2018 • PSBTE DIPLOMA

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Explain the term galvanic corrosion?

Short Answer May-2018 • PSBTE DIPLOMA

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Dec 2017
Explain electro chemical theory of corrosion.

Dec 2016
Comparison of chemical and electro-chemical corrosion?

May 2015 Explain stress corrosion and high temperature corrosion.

Dec 2015 Explain stress corrosion.
What do you understand by the analysis of coal? What are its kinds?

Short Answer May-2018 • PSBTE DIPLOMA

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What are the advantages of gaseous fuels?

Short Answer May-2018 • PSBTE DIPLOMA

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May 2021 What are the advantages of gaseous fuels over solid and liquid fuels?

May 2019 What are fuels? What are the advantages of gaseous fuels?

Dec 2018 What are the advantages of gaseous fuels?

Dec 2018 What are the advantages of gaseous fuels?

May 2015 Explain advantages of gaseous fuel over solid fuels.

What is meant by oxygen balance and how it is important?

Short Answer May-2018 • PSBTE DIPLOMA

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Write a note in Octane number?

Short Answer May-2018 • PSBTE DIPLOMA

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How explosives are classified?

Short Answer May-2018 • PSBTE DIPLOMA

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Define Refractories? How will you classify Refractories?

Short Answer May-2018 • PSBTE DIPLOMA

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May 2019 What are refractories?

May 2019 Give detailed account of three main types of refractories.

Dec 2018 What are refractories?

Dec 2018 What are refractories? Explain its types with examples.

Dec 2015 What are refractories?

Dec 2015 Explain the types of refractories.

SECTION-C

Q3. Attempt any five questions.

i. Explain electromagnetic separation process for the concentration of ores.

Long Answer 5x6=30 Marks May-2018 • PSBTE DIPLOMA

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Describe the various methods used to protect the metals from corrosion.

Long Answer May-2018 • PSBTE DIPLOMA

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Dec 2018 Explain the heat treatment methods to prevent corrosion of metals.

Dec 2018 Explain the heat treatment methods to prevent corrosion of metals.
What are rocket propellants? How are they classified?

Long Answer May-2018 • PSBTE DIPLOMA

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Write a short note on solid lubricant.

Long Answer May-2018 • PSBTE DIPLOMA

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Discuss the following properties of lubricants:

a) Flash point and Fire point

b) Acid value

Long Answer May-2018 • PSBTE DIPLOMA

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What are the main characteristics of a good refractory?

Long Answer May-2018 • PSBTE DIPLOMA

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May 2021 What is a refractory material?

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 2016
What are refractories? Give characteristics of a good refractory material.

May 2015 What are the characteristics of good refractory material?
What are the major sources of air pollution? What measures do you adopt to avoid it?

Long Answer May-2018 • PSBTE DIPLOMA

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May 2019 What are the various sources of air pollution?

Dec 2017
What are main sources of air pollution?
Write a note on Sewage treatment?

Long Answer May-2018 • 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-2018 (DIPLOMA 1st-2nd)

Chemistry May-2018

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