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

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Chemistry Dec-2018

PSBTE • DIPLOMA • Information Technology • 1st-2nd • Dec-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

Solved

Flux + gangue = _______

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Flux + gangue = _______
Producer gas is a mixture of CO and _______.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Producer gas is a mixture of CO and _______

May 2017
Producer gas is a mixture of ______.

May 2016
Producer gas is a mixture of CO & _____________.

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

May 2015 Producer gas is a mixture of _________ and ___________.
Viscosity of a lubricant _______ with increase in temperature.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Viscosity of a lubricant _______ with increase in temperature.
A good lubricant should have _______ boiling point.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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

Annealing is the process to make steel _______ in nature.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Annealing is the process to make steel _______ in nature.
_______ the pH, greater is the corrosion.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 _______ the pH, greater is the corrosion.
_______ glass is used in making laboratory apparatus.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 _______ glass is used in making laboratory apparatus.
Silica is a type of _______ refractory.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Silica is a type of _______ refractory.

Nylon-66 is an example of _______ polymer.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Nylon-66 is an example of _______ polymer.
The monomer unit of PVC is _______.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 The monomer unit of PVC is _______

May 2017
The monomer of polyvinylchloride is ______.

Dec 2017
The monomer of PVC is _________.

May 2015 The monomer of PVC is _________.
Units of viscosity are _______.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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May 2019 The unit of viscosity is _______.

May 2018
The unit of viscosity is ……………………. .

Dec 2018 Units of viscosity are _______

May 2017
The unit of viscosity is ______.
A good fuel has _______ calorific value.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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May 2018
A good fuel has low calorific.

Dec 2018 A good fuel has _______ calorific value.

Dec 2017
A good fuel has low calorific value.

_______ is the major component of natural gas.

Fill in the Blanks 1.5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 _______ is the major component of natural gas.
How is biogas produced?

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 How is biogas produced? Name its main constituents.

Dec 2016
What is biogas? Give its composition and uses?

May 2015 What are the constituents of biogas and oil gas? Give their uses.
Name the main constituents of biogas.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2017
Main hydrocarbon of biogas is ______________

Dec 2011 Main hydrocarbon constituent of biogas is ________
What are composite materials?

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2021
What are composite materials? Give one example.

Dec 2018 Give an example of a composite material.

Dec 2018 What are composite materials? Give an example.

May 2015 What are composite materials?

May 2015 What are the advantageous characteristics of composites?

Give an example of a composite material.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2021
What are composite materials? Give one example.

Dec 2018 What are composite materials?

Dec 2018 What are composite materials? Give an example.

May 2015 What are composite materials?

May 2015 What are the advantageous characteristics of composites?
Give applications of solid lubricants.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Give applications of solid lubricants. Also give an example.
Give an example of a solid lubricant.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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What is the purpose of making alloys?

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 What is the purpose of making alloys?

Explain flash point of a lubricant.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2021 What is flash point and fire point of a lubricant?

May 2021
Define flash and fire point of lubricants.

May 2019 What is fire point and flash point of a lubricant?

Dec 2018 Explain fire point of a lubricant.

Dec 2018 Explain flash point and fire point of a lubricant.

May 2015 Explain flash and fire points as applied to lubricants.
Explain fire point of a lubricant.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2021 What is flash point and fire point of a lubricant?

May 2021
Define flash and fire point of lubricants.

May 2019 What is fire point and flash point of a lubricant?

Dec 2018 Explain flash point of a lubricant.

Dec 2018 Explain flash point and fire point of a lubricant.

May 2015 Explain flash and fire points as applied to lubricants.
What is the difference between thermoplastic and thermosetting polymers?

Short Answer 3 Marks Dec-2018 • 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?

May 2017
Differentiate between thermoplastics and thermosetting plastics.

Dec 2017
Difference between thermoplastic and thermosetting plastics?

May 2016
Differentiate between thermoplastics 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.
Give one use of soda lime glass.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2019 Give uses of soda-lime glass.

Dec 2018 Give one use of soda lime glass.

Give one use of flint glass.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Give one use of flint glass.
Give one use of borosilicate glass.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2019 Give uses of borosilicate glass.

Dec 2018 Give one use of borosilicate glass.
Define polymerization.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Define degree of polymerization.

Dec 2018 Define polymerization and degree of polymerization.
Define degree of polymerization.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Define polymerization.

Dec 2018 Define polymerization and degree of polymerization.

What is the difference between erosion and corrosion?

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2021 Define corrosion? How is it different from erosion?

May 2020 What is difference between corrosion and erosion?

Dec 2018 What is the difference between erosion and corrosion?

Dec 2017
Define erosion. How it is different from corrosion?

May 2015 Define corrosion. How is it different from erosion?

Dec 2015 How is erosion different from corrosion?
Define calorific value of a fuel.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2021 Define calorific value of a fuel? What are the units of calorific value?

May 2019 What is calorific value of a fuel? Name the apparatus used to measure calorific value.

May 2015 Explain calorific value of fuel.
Which variety of coal has the highest calorific value?

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Define calorific value of a fuel. Which variety of coal has the highest calorific value?
What are the advantages of gaseous fuels?

Short Answer 3 Marks Dec-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?

May 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 are the characteristics of a good refractory material?

Short Answer 3 Marks Dec-2018 • 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?

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?
Name the various constituents of paint.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2020 What are the constituents of paint?

May 2019 What are the constituents of paint?

Dec 2018 Name the various constituents of paint.

May 2015 Name the various constituents of paint.

Dec 2015 Name various constituents of paint.
Define the term galvanization.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2021 What is galvanization of iron? Explain.

May 2021
What is galvanization?

May 2020 What is Galvanization? How it is done?

May 2019 Write brief note on galvanization.

May 2019 What is galvanization?

Dec 2018 Define the term galvanization.
Explain greenhouse effect.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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May 2020 Explain Global warming.

May 2019 Explain green house effect and global warming.

Dec 2018 Explain greenhouse effect.

Dec 2017
Explain green house effect and global warming.

May 2015 Explain greenhouse effect.

May 2015 Explain global warming.

Dec 2015 Explain global warming.

Define metallurgy.

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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Define mineral.

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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Define ore.

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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Define gangue.

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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Define flux.

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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Give composition and uses of brass.

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Give composition and uses of brass.

Dec 2015 Describe the composition and uses of Brass.
Give composition and uses of bronze.

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Give composition and uses of bronze.
Explain the heat treatment methods to prevent corrosion of metals.

Long Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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May 2018
Describe the various methods used to protect the metals from corrosion.

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

Explain the process of cementation.

Long Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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May 2019 Define cementation.

Dec 2018 Explain the process of cementation.
What are the characteristics of a good fuel?

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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May 2020 What are the characteristics of a good fuel?

May 2019 What are characteristics of a good fuel?

May 2019 What are the characteristics of a good fuel?

Dec 2018 What are the characteristics of a good fuel?

Dec 2017
What are fuels? Give the characteristics of good fuel.

Dec 2016
What is fuel? What are the characteristic of good fuel?

Dec 2015 What are the characteristics of a good fuel?

Dec 2011 What are the characteristics of a good fuel?
Give composition and uses of water gas.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Give composition and uses of water gas.

May 2016
What is water gas? Give its composition and uses.

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.
Give composition and uses of producer gas.

Short Answer 3 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Give composition and uses of producer gas.

Dec 2017
What is a producer gas? Give its composition and uses.

Dec 2015 What is producer gas?

Dec 2015 Give the composition of producer gas.

Dec 2015 Give the uses of producer gas.

What are anti knock compounds?

Short Answer 2 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 Give two examples of anti knock compounds.

Dec 2018 What are anti knock compounds? Give two examples.

May 2015 What are anti-knocking compounds?

May 2015 Give two examples of anti-knocking compounds.
Give two examples of anti knock compounds.

Short Answer 2 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 What are anti knock compounds?

Dec 2018 What are anti knock compounds? Give two examples.

May 2015 What are anti-knocking compounds?

May 2015 Give two examples of anti-knocking compounds.
What are refractories?

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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May 2019 What are refractories?

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

May 2018
Define Refractories? How will you classify Refractories?

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

Dec 2015 What are refractories?

Dec 2015 Explain the types of refractories.
Explain its types with examples.

Long Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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What is enamel?

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 What are the constituents of enamels?

Dec 2018 What are the applications of enamels?

Dec 2018 What is enamel? What are the constituents and applications of enamels?

May 2015 Define enamel. Give its composition and uses.

May 2015 What is an enamel?

May 2015 Write the constituents of enamel.

Dec 2011 What is an enamel? Write constituents and applications of enamels.
What are the constituents of enamels?

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 What is enamel?

Dec 2018 What are the applications of enamels?

Dec 2018 What is enamel? What are the constituents and applications of enamels?

May 2015 Define enamel. Give its composition and uses.

May 2015 What is an enamel?

May 2015 Write the constituents of enamel.

Dec 2011 What is an enamel? Write constituents and applications of enamels.
What are the applications of enamels?

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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Dec 2018 What is enamel?

Dec 2018 What are the constituents of enamels?

Dec 2018 What is enamel? What are the constituents and applications of enamels?

May 2015 Define enamel. Give its composition and uses.

May 2015 What is an enamel?

May 2015 Write the constituents of enamel.

Dec 2011 What is an enamel? Write constituents and applications of enamels.
Explain addition polymers with examples.

Long Answer 5 Marks Dec-2018 • 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 condensation polymers with examples.

Dec 2018 Explain addition polymers with examples.

Dec 2018 Explain condensation polymers with examples.

May 2016
Explain addition and condensation polymers.

May 2015 Explain addition and condensation polymers.

Dec 2011 Explain condensation polymerization using nylon as an example.

Explain condensation polymers with examples.

Long Answer 5 Marks Dec-2018 • 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 addition polymers with examples.

Dec 2018 Explain condensation polymers with examples.

May 2016
Explain addition and condensation polymers.

May 2015 Explain addition and condensation polymers.

Dec 2011 Explain condensation polymerization using nylon as an example.
What are the characteristics of a good lubricant?

Short Answer 5 Marks Dec-2018 • PSBTE DIPLOMA

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May 2021 What are the characteristics of a good lubricant?

May 2021
What are the functions of a lubricant?

May 2020 What are the functions of lubricants?

May 2019 What are the functions of a lubricant?

May 2019 What are the functions of a lubricant?

Dec 2018 What are the characteristics of a good lubricant?

Dec 2017
What are functions of lubricants?

Dec 2017
What are lubricants? How are they classified?

Dec 2016
Define the term lubricant? What are the function of lubricant?

May 2015 What are the characteristics of a good lubricant?

May 2015 What are lubricants?

Dec 2015 What are the functions of lubricants?

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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 Dec-2018 (DIPLOMA 1st-2nd)

Chemistry Dec-2018

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