Solved question paper for CHEM Dec-2011 (DIPLOMA 1st-2nd)

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Solved Question Paper

Chemistry Dec-2011

PSBTE • DIPLOMA • Information Technology • 1st-2nd • Dec-2011

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

The naturally occurring compound of metal is known as ________

Fill in the Blanks 1 Marks Dec-2011 • PSBTE DIPLOMA

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Slow and continuous decay of metals by mechanical force is known as ________

Fill in the Blanks 1 Marks Dec-2011 • PSBTE DIPLOMA

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Dec 2015 Slow and continuous decay of metal by mechanical force is known as ________.
Protection of Fe from corrosion by cementation of Cr. is known as ________

Fill in the Blanks 1 Marks Dec-2011 • PSBTE DIPLOMA

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Q kJ heat is obtained by combustion of V m3 of gaseous fuel, its calorific value = ________

Fill in the Blanks 1 Marks Dec-2011 • PSBTE DIPLOMA

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Main hydrocarbon constituent of biogas is ________

Fill in the Blanks 1 Marks Dec-2011 • PSBTE DIPLOMA

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Dec 2018 Name the main constituents of biogas.

Dec 2017
Main hydrocarbon of biogas is ______________
The Government of India set up ________ on 1st March 2002 under the provisions of the Energy Conservation Act, 2001.

Fill in the Blanks 1 Marks Dec-2011 • PSBTE DIPLOMA

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Coke number of lubricating oil is measured in ________

Fill in the Blanks 1 Marks Dec-2011 • PSBTE DIPLOMA

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Suspension of graphite in water is called as ________

Fill in the Blanks 1 Marks Dec-2011 • PSBTE DIPLOMA

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May 2019 Suspension of graphite in water is called _______.

May 2015 Suspension of graphite in water is called ___________.

Pigmented varnish is called ________

Fill in the Blanks 1 Marks Dec-2011 • PSBTE DIPLOMA

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Dec 2016
Pigment varnish is called ..............

Dec 2015 Pigment varnish is called _________.
Silica (SiO2) bricks are used in lining roof of ________

Fill in the Blanks 1 Marks Dec-2011 • PSBTE DIPLOMA

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Chloroethene is the monomer of PVC.

True / False 1 Marks Dec-2011 • PSBTE DIPLOMA

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Dec 2017
Chloromethane is the monomer of PVC.

May 2015 Chloroethene is the monomer of PVC.
Natural rubber is an elastomer.

True / False 1 Marks Dec-2011 • PSBTE DIPLOMA

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May 2019 Natural rubber is a polymer of _______.

May 2016
Rubber is a natural polymer.

Dec 2015 Natural rubber is a polymer of _________.

Styrene butadiene rubber (SBR) is also known by Buna-S.

True / False 1 Marks Dec-2011 • PSBTE DIPLOMA

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Earth’s most water is locked in the form of ice at north and south poles.

True / False 1 Marks Dec-2011 • PSBTE DIPLOMA

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PCBS (Polychlorinated biphenyls) used as fluid in transformers and capacitors are less carcinogenic pollutants.

True / False 1 Marks Dec-2011 • PSBTE DIPLOMA

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Define smelting of concentrated ore.

Short Answer Dec-2011 • PSBTE DIPLOMA

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Give the composition, one important property and application of Nichrome.

Short Answer Dec-2011 • PSBTE DIPLOMA

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Can we store copper sulphate solution in iron container? Give reason in either case. (Use standard electrode potentials of Fe and Cu -0.44V and +0.34V respectively).

Short Answer Dec-2011 • PSBTE DIPLOMA

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Write Dulong’s formula with usual notations and calculate higher calorific value (HCV) of the coal sample containing 86% of C, 10% H and 4% O in kilocalories per kilograms.

Long Answer Dec-2011 • PSBTE DIPLOMA

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In a proximate analysis of coal two grams of coal sample is heated to 105°C, for half an hour cooled and weighed is found to weigh 1.95g, then it further heated to 925°C with covered lib in muffle furnace for five minutes, then cooled and found to weigh 1.85g. The residue is heated strongly to obtain ash 0.100g, calculate percentage of moisture, volatile matter and ash content in the coal sample.

Long Answer Dec-2011 • PSBTE DIPLOMA

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What is power alcohol?

Short Answer Dec-2011 • PSBTE DIPLOMA

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May 2019 What is power alcohol?
Define fire point, flash point, viscosity and viscosity index (VI), pour point and cloud point of oil.

Short Answer Dec-2011 • PSBTE DIPLOMA

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Dec 2017
Define fire point, flash point, viscosity, viscosity index, cloud point and pour point.

Dec 2016
Define fire point, viscosity , viscosity index, pour point and cloud point of oil?
What is an enamel? Write constituents and applications of enamels.

Short Answer Dec-2011 • PSBTE DIPLOMA

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Dec 2018 What is enamel?

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.
What are semiconductors? How are these classified? Give an example and applications of each type.

Long Answer Dec-2011 • PSBTE DIPLOMA

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Explain condensation polymerization using nylon as an example.

Long Answer Dec-2011 • 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 2016
Explain addition and condensation polymers.

May 2015 Explain addition and condensation polymers.
Define homopolymer and copolymer with suitable explain.

Short Answer Dec-2011 • PSBTE DIPLOMA

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May 2019 Explain homopolymers and co-polymers with examples.

Dec 2015 What do you understand by homopolymers and copolymers?
Give three main causes of water pollution.

Short Answer Dec-2011 • PSBTE DIPLOMA

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May 2020 What are the sources of water pollution?

May 2016
What is air pollution? Give 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.
What are the applications of geosythetic and ceramic materials?

Short Answer Dec-2011 • PSBTE DIPLOMA

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Explain rusting of iron using electro-chemical theory (when cathodic area > anodic area).

Long Answer Dec-2011 • PSBTE DIPLOMA

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May 2020 What is corrosion? Explain the mechanism rusting of iron by electrochemical corrosion in detail.

May 2015 Explain the rusting of iron with the help of electrochemical theory of corrosion.
What is cetane number? How chemical structures of fuel influence the cetane number?

Long Answer Dec-2011 • PSBTE DIPLOMA

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Explain total acidity, coke and aniline number of a lubricant.

Long Answer Dec-2011 • PSBTE DIPLOMA

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Describe with neat diagram the sacrificial anodic protection of base metal iron from corrosion.

Long Answer Dec-2011 • PSBTE DIPLOMA

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Differentiate between thermoplastics and thermosetting plastics.

Short Answer Dec-2011 • 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?

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.
Explain Free energy change and Ellingham diagrams their usefulness in metallurgy.

Long Answer Dec-2011 • PSBTE DIPLOMA

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What are the characteristics of a good fuel?

Short Answer Dec-2011 • 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 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?

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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 Dec-2011 (DIPLOMA 1st-2nd)

Chemistry Dec-2011

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