Important RGPV Question,
BT-101 Engineering Chemistry
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UNIT-1 Water – Treatments and Industrial Applications
Q. 1) What is the principal of EDTA method? Explain the estimation of total hardness of Water by complexometric method.
(RGPV Dec 2022)
Q. 2)Â Calculate the total hardness of a water sample pictures following analysis : Ca(HCO3)2 = 4.86 mg/L; Mg(HCO3)2 = 5.84 mg/L; CaSO4 = 6.8 mg/L; MgSO4 = 8.4 mg/L.
(RGPV Dec 2022)
Q. 3) Define Hardness of water. Mention and define various units of Hardness. Write relationship between these units.
Or
Define hardness. Explain the cause of hardness in water.Â
(RGPV Dec 2020, RGPV May 2019 CBGS, RGPV Dec 2011)
Q. 4) Discuss principle of EDTA method for determination of hardness of water.
Or
How is hardness of water determined by EDTA method ? Describe.
(RGPV Dec 2020, RGPV May 2019 CBGS, RGPV Dec 2017)
Q. 5) 100 ml water sample required 20 ml of N/50 H2SO4 for neutralisation to Phenolphthalein end point. After Methyl orange was added to this and further acid required was 2.5 ml. Calculate the alkalinity type and extent in terms of CaCO3 equivalent.
(RGPV Dec 2020)
Q. 6) Why do we express hardness of water in terms of CaCO3 equivalents ?
(RGPV June 2020)
Q. 7) Explain various units of hardness of water giving their relationship.
(RGPV Jun 2022, RGPV May 2019)
Q. 8) Discuss method for determination of alkalinity in given water sample.
(RGPV Jun 2022, RGPV May 2019)
Q. 9) Differentiate between hard water and soft water. What is meant by hardness of water ? Write various units to express hardness of water giving their relationship.
(RGPV Nov 2019, RGPV Jun 2011)
Q. 10) Discuss the following terms.
i) Determination of hardness by EDTA method
ii) Caustic embrittlement
(RGPV Nov 2019 CBGS, RGPV May 2019)
Q. 11) Explain zeolite method of water softening.
(RGPV Nov 2019 CBGS)
Q. 12) Define Alkalinity.
(RGPV Nov 2019 CBGS)
Q. 13) Discuss ion exchange process for softening of water with the help of chemical reaction and diagram. (RGPV May 2019)
Q. 14) Write a note on scales and sludges.
(RGPV May 2019)
Q. 15) 50 ml of water required 12.1 ml of N/50 HCl to reach phenolphthalein end point and 18.5ml of the same acid in presence of methyl orange indicator. Calculate type and extent presence of alkalinity.
(RGPV May 2019 CBGS)
Q. 16) How many grams of CaSo4 dissolved per litre gives 126 ppm of hardness.
(RGPV Jun 2014)
Q. 17) A water sample containing 136 mg of CaSo4 per litre calculate the hardness in terms of CaCo3 equivalents.
(RGPV Dec 2012)
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UNIT-2 Boiler Problem & Softening Problems
Q. 1) What is boiler corrosion ? Discuss its causes.
Or
Write short note on boiler corrosion.
(RGPV Dec 2020, RGPV Dec 2013, RGPV Dec 2017)
Q. 2) Discuss the lime soda process for softening of hard water.
Or
Write short not on lime-soda process.
Or
Write in brief note on lime-soda process.
(RGPV Jun 2022, RGPV May 2019, RGPV May 2018, RGPV Nov 2018)
Q. 3) Write the equations involved in the lime-soda process. Give the advantages of hot lime-soda process over cold lime-soda process.
(RGPV Jun 2014)
Q. 4) Describe the iron exchange process used for softening of water with neat diagram.
(RGPV Jun 2022)
Q. 5) What is Caustic embrittlement ? How do you prevent it?
(RGPV Dec 2020, RGPV Dec 2022, RGPV Dec 2013)
Q. 6) How is portable water disinfected by ozonation?
(RGPV Dec 2022)
Q. 7) Discuss with the help of a neat diagram, various steps involved in the manufacture of Portland cement.
(RGPV June 2020)
Q. 8) Describe ion exchange resin method for softening water ?
(RGPV June 2020)
Q. 9) State and derive Bear-Lambert’s law. Discuss instrumentation, working and application of colorimetry.
(RGPV June 2020)
Q. 10) What are zeolites ? How softening of hard water is carried out by zeolite process ? Also write advantages and disadvantages of the process.
Or
Discuss chemistry involved in zeolite process of softening hard water.
Or
Explain the principle and process of zeolite process of softening hard water.
Or
What are zeolites ? How do they function in removing the hardness of water?
Or
Write short note on zeolite process.
(RGPV Dec 2014, RGPV Dec 2017, RGPV Dec 2007, RGPV Jun 2013, RGPV Nov 2018, RGPV May 2018)
Q. 11) Describe about the following ion-exchange process with neat diagram.
Or
Discuss the demineralization of hard water by giving appropriate equations and diagram.
or
Draw a well labelled diagram of ion-exchange resin method for softening hard water. How demineralized water is different from distilled water ?
Or
Explain ion-exchange process of water softening.
Or
Discuss ion-exchange process for softening of water with the help of chemical reaction and diagram.
(RGPV Dec 2022, RGPV Dec 2012, RGPV Jun 2010, RGPV Nov 2018, RGPV May 2019, RGPV Jun 2020)
Q. 12) Write short notes on: (any three) (i Rusting of Iron (ii) Aniline Point(iii) Vulcanisation of Rubber (iv) Colorimetry
(RGPV Dec 2020, RGPV May 2019)
Q. 13) Write explanatory notes on following (any two): (a) Knocking (b) Setting and hardening of cement (c) Break point chlorination
(RGPV June 2020)
Q. 14) What do you understand by boiler troubles ? Name the methods used for softening water Describe lime soda process.
(RGPV Nov 2019)
Q. 15) Write short note on scale.
(RGPV Nov 2019, RGPV Jun 2020)
Q. 16) Explain the causes of scale formation. Write disadvantages of scale formation.
(RGPV Jun 2011)
Q. 17) Discuss formation, causes and harmful effects of scales and sludges in boilers.
Or
Explain scale and sludge formation. Write disadvantages of scale and sludge formation.
Or
Explain scale and sludge formation. Write their disadvantages.
(RGPV Dec 2020, RGPV Jun 2008, RGPV Dec 2011, RGPV Sep 2009)
Q. 18) Discuss the following terms-(i) Blowdown operation (ii) Carry over
(RGPV Jan/Feb 2008, RGPV Nov 2018 CBGS)
Q. 19) Explain the various internal treatment methods for boilers.
Or
Discuss any two internal conditioning methods of water softening.
Or
Explain internal conditioning of boiler feed water.
(RGPV Dec 2010, RGPV Jun 2013, RGPV Jun 2010)
Q. 20) Explain why-
(i) Hard water consumes a lot of soap
(ii) Magnesium bicarbonate require double amount of lime for softening.
(RGPV Dec 2014, RGPV Jun 2011, RGPV Jun 2008)
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UNIT-3 Lubricants and Lubrication
Q. 1) Explain following properties of lubricants giving their significance: (i) Viscosity Index (ii) Flash point (iii) Steam Emulsion Number
(RGPV Dec 2020, RGPV May 2019)
Q. 2) Define lubricant. Discuss classification of lubricants with suitable examples. What are the functions of lubricant.              Â
 (RGPV Jun 2020, RGPV Jun 2010, RGPV Dec 2011)
Q. 3) Discuss the important properties of lubricating oils, which are useful for their evaluation.
(RGPV Jun 2020)
Q. 4) Write short note on :Â (i) Polarizability (ii) Thin film lubricants and fluid film lubricants
(RGPV Jun 2022, RGPV May 2019)
Q. 5) Write a short note on lubricants with special reference to their (i) classification (ii)mode of action with examples and uses.
(RGPV Dec 2022)
Q. 6) Write a short note on (i) Viscosity index (ii) Flashpoint
(RGPV Jun 2022, RGPV May 2018, 2019 CBGS)
Q. 7) What is lubrication ? Give classification of lubricants. Discuss mechanism of lubrication.
(RGPV Nov 2019, RGPV Nov 2019 CBGS, RGPV May 2019, RGPV May 2019 CBGS)
Q. 8) What are the different mechanism of lubrication ? Discuss hydrodynamic film lubrication.
Or
Explain hydrodynamic lubrication.
Or
Describe hydrodynamic mechanism of lubrication.
(RGPV Jun 2007, RGPV Jun 2010, RGPV Jun 2012, RGPV Dec 2011, RGPV Dec 2013)
Q. 9) Define and write the significance of the following : i) Carbon residue    ii) Aniline point
(RGPV Nov 2019 CBGS, RGPV April 2009)
Q. 10) Write short note on boundary lubrications.
(RGPV Nov 2018)
Q. 11) Write short note on solid lubrications.
(RGPV Marc/April 2010)
Q. 12) What do you mean by viscosity index ?
Or
Write brief note on viscosity Index.
Or
Write short note on viscosity index.
(RGPV Dec 2012, RGPV Dec 2013,RGPV May 2018)
Q. 13) Define flash point and fire point. Describe the determination of flash point by Pensky-Marten’s apparatus.
Or
Discuss flash point determination by Pensky-Marten’s apparatus. What is the significance of the test.
Or
Discuss the method of determination of flash and fire point of a lubricating oil by Pensky-Marten’s apparatus.
(RGPV Jun 2010, RGPV Jun 2014, RGPV Jun 2017, RGPV Feb 2010)
Q. 14) Write short note on a saponification number.
Or
Write short note on saponification value.
(RGPV Dec 2013, RGPV May 2019, RGPV Marc/April 2010)
Q. 15) Write short note on SEN.
Or
Why should a good lubricating oil posse a low SEN.
Or
Write note on steam emulsification number.
(RGPV Dec 2008, RGPV Dec 2017, RGPV Jun 2014, RGPV Jun 2011)
UNIT-4 Polymer & Polymerization
Q. 1) What is the difference between free radical and ionic polymerization ?
(RGPV Dec 2022)
Q. 2) Write a short note on preparation properties and uses of NYLON 6,6.
(RGPV Dec 2022)
Q. 3) What are living polymers ? Give preparation, properties and uses of PVC.
(RGPV Jun 2022)
Q. 4) What is Elastomers ? Give the preparation and properties and uses of BUNA’s.
(RGPV Jun 2022)
Q. 5) Write Preparation, properties and uses of following : (i) PVC (ii) Nylon 6 : 6 (iii) Poly Ethylene  (iv) Teflon              Â
(RGPV Dec 2020,RGPV May 2019,RGPV Nov 2019 CBGS)
Q. 6) What are Polymers ?Â
(RGPV Dec 2020, RGPV June 2020, RGPV Nov 2019, RGPV Nov 2019 CBGS, RGPV May 2019, RGPV May 2019 CBGS)
Q. 7) Give classification of polymers with examples.
(RGPV,June.2020, RGPV Nov 2019, RGPV Nov 2019 CBGS, RGPV May 2019, RGPV May 2019 CBGS)
Q. 8) Discuss reaction mechanism of polymerisation.
(RGPV Dec 2020, RGPV June 2020, RGPV Nov 2019, RGPV Nov 2019 CBGS, RGPV May 2019)
Q. 9) Differentiate the following with suitable examples Thermosettic polymers and Thermoplastic polymers.
(RGPV Dec 2022, RGPV Jun 2010)
Q. 10) Distinguish between the thermoplastic and thermosetting resins.
Or
Differentiate thermoplastic resins from thermosetting resins.
(RGPV Jun 2012, RGPV Dec 2014, RGPV Dec 2010)
Q. 11) Explain about Lambert and beer’s law.
(RGPV Dec 2022, RGPV Nov 2019 CBGS)
Q. 12) Write brief notes on (any two)(i) Degree of freedom (ii) Biodegradable polymers (iii) Electron affinity Â
(RGPV Jun 2022, RGPV May 2019)
Q. 13) Give preparation, properties and uses of following : i) PMMAÂ ii) PVCÂ Â Â iii) PVA
(RGPV May 2019 CBGS, RGPV Nov 2019)
Q. 14) Define the term polymer. Give classification of polymers. Discus the role of functionality in polymerization.              Â
(RGPV Jun 2012)
Q. 15) Discuss the classification of polymers on the basis of molecular forces. (RGPV Dec 2013)
Q. 16) Write short not on free radical polymerization.
Or
Explain free radical polymerization with one example.
(RGPV Nov 2018, RGPV March/April 2010)
Q. 17) Give the mechanism of addition polymerization.
(RGPV Dec 2012)
Q. 18) Write mechanism of polymerization.
Or
Explain polymerization. Discuss mechanism of polymerization with suitable examples.
(RGPV Dec 2019, RGPV Nov 2018)
Q. 19) Write preparation, properties and uses of Teflon.
Or
Write preparation and properties of Teflon.
Or
Write short note on Teflon.
Or
Write preparation, properties and uses of PTFE.
(RGPV May 2018, RGPV Jun 2011, RGPV Jun 2013, RGPV Dec 2017)
Q. 20) Give preparation, properties and uses of dacron.
Or
Give preparation, properties and uses of terephthalate.
Or
Write preparation and properties of terylene.
(RGPV Jun 2010, RGPV Jun 2018, RGPV Dec 2018, RGPV Dec 2013)
Q. 21) Give preparation, properties and uses of bakelite.
Or
Give preparation, properties of the bakelite.
Or
Write short notes on phenolic resin.
(RGPV Dec 2022, RGPV Jun 2012, RGPV Jun 2018, RGPV Dec 2016, RGPV Dec 2013, RGPV Nov 2018)
Q. 22) What is vulcanization of rubber ? Give their applications.
Or
Write brief note on vulcanization.
Or
Write brief note on vulcanization of rubber.
(RGPV Jun 2022, RGPV Dec 2013, RGPV Dec 2017, RGPV May 2018, RGPV Nov 2019)
UNIT-5 Phase Equilibrium and Corrosion
Q. 1) What is oxidation corrosion ? and how does it take place ? Describe the mechanism of oxidation corrosion.
(RGPV Jun 2022)
Q. 2) Explain pitting corrosion and stress corrosion.
(RGPV Jun 2022, RGPV Jun 2010)
Q. 3) Define Corrosion. Write types of corrosion. Explain theory of mechanism of corrosion.
(RGPV Dec 2020, RGPV Nov 2018)
Q. 4) Explain electrochemical theory of corrosion with reference to iron. Discuss process of galvanization to protect iron.
(RGPV May 2019, RGPV Dec 2016)
Q. 5) Write mechanism of electrochemical corrosion.
(RGPV Dec 2015)
Q. 6) Explain Phase Rule. Discuss phase diagram of single component system.
(RGPV Dec 2020, RGPV May 2019)
Q. 7) Define calorific value. Discuss how you will determine calorific value of a fuel by Bomb calorimeter.
(RGPV Dec 2020, RGPV Nov 2019 CBGS)
Q. 8) Define NCV and GCV. How are gross and net calorific values of a solid fuel determined using Bomb Calorimeter.
(RGPV Jun 2020)
Q. 9) What is triple point ? Explain water system with the help of need face diagram.
(RGPV Jun 2022)
Q. 10) Write in brief note on ( Any two) (i) Phase diagram of a single component systems (ii) Electronic transitions (iii)Vibrational modes in IR spectroscopy (iv)Electronegativity
(RGPV Dec 2022)
Q. 11) Differentiate the following with suitable examples galvanic series and electrochemical series Â
(RGPV Dec 2022)
Q. 12) Write short notes on. (Any two) i) Fire point  ii) Alkalinity     iii) Phase EquilibriumÂ
(RGPV Nov 2019, RGPV Jun 2020)
Q. 13) Define fuel. Discuss various parameters under ultimate analysis giving their significance.
(RGPV Nov 2019 CBGS)
Q. 14) Explain octane number and cetane number.
(RGPV Nov 2019 CBGS, RGPV May 2019 CBGS)
Q. 15) Write short note on phase diagram for water system.
Or
Write short note on phase diagram of water.
Or
Write brief note on phase diagram of single component system.
(RGPV Nov 2018, RGPV Jun 2016, RGPV Dec 2016, RGPV Jun 2017)
Q. 16) Define corrosion. Write causes and effects.
Or
What are the consequences of corrosion ?
Or
Write brief note on corrosion.
(RGPV Dec 2015, RGPV Nov 2019)
UNIT-6, 7 Spectroscopic Techniques & Periodic Properties
Q. 1) What is a spectroscopy? Describe the principle instrumentation process of vibrational and rotational spectroscopy.
(RGPV Dec 2022, RGPV Nov 2019)
Q. 2) What is electric spectroscopy ? Discuss about electronic Transitions and application of U.V. Spectroscopy.
(RGPV Jun 2022, RGPV Nov 2019 CBGS)
Q. 3) What is Spectroscopy? Why it is superior over other methods? Discuss Principle, Instrumentation and applications of IR spectroscopy.
(RGPV Dec 2020, RGPV Nov 2019, RGPV May 2019, RGPV May 2019 CBGS)
Q. 4) Explain following terms for elements giving factors affecting and Periodic trends. (i) Atomic size (ii) Electron affinity (iii) Ionisation Energy
(RGPV Dec 2020, RGPV Nov 2019)
Q. 5) What is periodic Table ? Write trends of following in a group and in a period giving suitable reason : i) Electronic configuration   ii) Atomic size     iii) Electron affinity
(RGPV Nov 2019, RGPV Nov 2018)
Q. 6) Write informative note on U.V. visible spectroscopy.
Or
Write short note on U.V. spectroscopy.
(RGPV Dec 2012)
— Best of Luck for Exam —
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