called boilers compounds. Examples : Sodium carbonate and sodium phosphate.
2. What are the requirements of the boiler feed water?
zero hardness. prevents efficient heat transfer.
2 It must be free from dissolved It Leads to boiler corrosion.
gases like O 2 , CO 2 .
3 It Should be from Produces wet steam.
salts and alkalinity. which causes brittlement of parts.
the pressure is applied on the salt water, the water flows from salt to water side.
5. What is meant by carry over? How it is caused?
What is EDTA? Write its structure. What is priming and foaming? How they can be prevented? (Oct 98) Priming is the process of production of wet steam.EBT) When this solution is titrated against EDTA.June 2007) Caustic embrittlement means intercrystalline cracking of boiler metal.EBT) + EDTA ------. What is calgon conditioning? (A. When the EBT is added to the water sample it forms wine red colour weak complex with Ca2+.6. The process of removing common salt from the sea water is known as desalination. 9. June 2005. buffer solution is added.Mg2+) + EBT -------. What is meant by carbonate and non carbonate hardness? Carbonate hardness : This is due to the presence of bicarbonate of calcium and magnesium. Ethylene diamine tetra acetic acid. (ii)By adding tannin. Foaming can be prevented by adding coagulants like sodium aluminate and antifoaming agents like synthetic polyamides. Foaming is the formation of stable bubbles above the surface of water. (Ca2+. (c) reverse osmosis and(d)electrodialysis .Jan 2010 ) Calgon is sodium hexa meta phosphate Na2 [Na4 (po3 )6 ]. it replaces the indicater from the weak complex form stable EDTA complex. lignin to the boiler water.This substance interacts with calcium ions forming a highly soluble complex and thus prevents the precipation of scale forming salt 2CaSO 4 +Na2 [Na4 (PO 3 )6 …….U. It can be prevented by (i) using sodium phosphate as softening agent instead of sodium carbonate. 11.Mg .(Ca. What is meant by caustic embrittlement? How we can prevent it? (A. The water containing dissolved salts with a peculiar salty or brackish taste is called brackish water.(Ca.EDTA) + EBT 10. The end point is the change of colour from wine red to steel blue.Mg . Write the principle of EDTA method. 8. What is desalination? Name any four methods of converting sea water into fresh water. The various desalination process are (a) distillation.Na2 [Na4 [Ca2 (PO 3 )6 ]+2Na2 SO 4 . (Ca.U. Non – carbonate hardness : This is due to the presence of chlorides of sulphates of calcium and magnesium. 7. (b)freezing.Mg . Mg2 + ions. which blocks the hair cracks. In order to maintain pH. Priming can be prevented by controlling the velocity of steam and keeping water level. 12. The amount of hardness causing ions can be estimated by titrating the water sample against EDTA using EBT at a pH of 8 to 10.
18. 3. Advantages: 1. the above statement is justified. 5. Write a short note on Treatment of water for domestic supply. The principles involved in this process are the solubility of a gas is directly proportional to pressure and inversely proportional to temperature. 6. What is meant by boiler corrosion? How do you prevent it? Boiler corrosion is due to the presence of dissolved gases such as O2. Mechanical deaeration is a method used to remove dissolved gases such as O2 and CO2. Discuss the principle & method involved in the determination of different types and amount of alkalinity of water. .13. What is disinfection? The process by which harmful bacteria are destroyed to make the water safe for drinking is called disinfection. What is alkalinity of water? Alkalinity of water is a measure of its acid-neutralising ability. Soft water is not demineralised water whereas demineralised water is soft water justify. CO2 and the salts like MgCl2. Membranes : Cellulose acetate. Softening involes removal of only hardness causing ions whereas demineralization involves removal of all the ions present in water. June 2009) It is a process of removing a portion of concentrated water by fresh water frequently from the boiler during steam production. 14. 16. What is blow down operation? (A. 4. 15. It removes ionic. 2. Name some of the membranes employed in reverse osmosis process. The natural alkalinity in waters imparted by the hydroxides. 2. Explain about the estimation of hardness by EDTA method. Hence. Write a short note on Internal conditioning.U. 17. carbonates and bicarbonates. State the advantages of this process. Write a short note on Demineralisation process. What are boiler feed water? Explain their troubles. non ionic and colloidal impurides. The water obtained can be used for high pressure boiler PART-B 1. Cellulose butyrate.
x/m = KP 1/n 6. 2. What are Promoters? Promoters are defined as the substance which increase the activity of a catalyst. 7. Example: Adsorption of H2 on Ni. What is the effect of temperature and pressure on the adsorption of H2 gas on charcoal? Adsorption of H2 on charcoal is rapid at lower temperature and decreases with increase in temperature. How is Arsenic poisoning removed from the body? Colloidal Ferric hydroxide is administered which adsorbs arsenic poison and is removed from the body by vomiting. What is chemisorption? Give an example. 11. but the rate of adsorption increases with the increase of pressure. Define adsorption. What is Physisorption? Give an example. Example: Adsorption of H2 or O 2 on charcoal. 12. 4. How is evaporation of water in lake minimized? Due to scarcity of water during summer a layer of stearic acid is spread over water lakes and reservoirs. 9. 5. The process of concentration of molecules of a gas or liquids at a solid surface is called adsorption. What is Freundlich’s adsorption isotherm? The relationship between the magnitude of adsorption (x/m) and pressure (p) can be expressed mathematically by an equation known as Freundlich’s adsorption isotherm. What is Sorption? Sorption is the process in which both adsorption and absorption takes place simultaneously. Unit – II Surface Chemistry 1. 3. What is the demerits of Langmuirs adsorption isotherm? Langmuirs adsorption isotherm holds good at lower pressure but fails at high pressure. 8. What is catalytic poisoning? A substance which destroys the activities of the catalyst to accelerate a reaction is called catalytic poisoning. 10. The adsorption of a gas on a solid is sometimes called occlusion. . The adsorbed stearic acid on the surface of water minimizes evaporation of water. Chemisorption is the one in which the adsorbed molecules are held on the surfaces of the adsorbent by chemical bonds. Physisorption is the one in which the adsorbed molecules are held on the surfaces of the adsorbent by weak physical or vanderwaal forces of attraction. What is Langmuir adsorption isotherm? How it is mathematically represented? The relationship between the amount of gas adsorbed to the pressure of the gas at constant temperature is known as Langmuir adsorption isotherm.
Reversible character of adsorbed gases. 3. Distinguish between Physisorption and Chemisorption. 2. 5. 14. Activation of adsorbent. Nature and surface area of adsorbents. 6. . 3. The adsorbents are used in gas masks. Discuss the role of activated carbon in abatement of air pollution and waste water treatment. Arsenic poisoning is removed from the body by vomiting. 5. 15. Chromatographic analysis are carried out by adsorption. 4. PART-B 1. Derive the kinetic equation of Langmuir-Hinshelwood mechanism. Nature of gases. Pressure of gases. Give the conditions in which it fails. List the factors that affect adsorption? 1. Explain the role of adsorption in catalysis? Give examples. 2. 3. 4. In water softening ion-exchange resin and zeolite are used. 7. 2. silica and alumina gels are used. What are surface reaction? Surface reactions are the reaction in which at least one step of the reaction mechanism is adsorption of one or more reactants on the substrate. 1. Derive Langmuir adsorption isotherm. For the removal of moisture in the atmosphere. 8.13. Enthalphy of adsorption. 6. Discuss the role of adsorbents in pollution abatement. Mention any four application of adsorption. Temperature of gases. 7. 4. Explain the contact theory of catalysis. Derive Freundlich’s adsorption isotherm. 5.
Normalizing 5. What is meant by 18/8 stainless steel? If the steel contains 18% Cr and 8% Ni. it is referred to as 18/8 stainless steel. Mention any two advantages (or significance of alloy making). Annealing means softening. Tempering 4. 1. 3. Carburizing 6. 9. Heat treatment is defined as.. 7. It is the most widely used stainless steel. 4. “the process of heating and cooling of solid steel article under carefully controlled conditions”. Chromium is effective if its content is 16% or more. The main heat-treatment processes are 1. 2.3 to 1. Annealing can be done in two ways (i) Low temperature annealing (or) process annealing (ii) High temperature annealing (or) full annealing 8. What is Tempering? It is the process of heating the already hardened steel to a temperature lower than its own hardening temperature and then cooling it slowly. Hardening 3. Unit III Alloys and Phase rule Part – A 1.5%. one of which at least is essentially a metal”. What is annealing? Explain its types. 6. followed by slow cooling in a furnace. Annealing 2. 2. The carbon content in stainless steel ranges from 0. Define an Alloy (or) What are alloys? An alloy is defined as “homogeneous solid solution of two or more different elements. What is meant by quenching in heat treatment of metals? It is the process of heating the steel beyond the critical temperature and then suddenly cooling it either in oil or brine-water or some other fluid. Nitriding 5. Name some important heat treatment process. What are stainless steels? These are alloy steels containing chromium together with other elements such as nickel. To resist the corrosion of the metal. To increase the hardness of the metal. . This is done by heating the metal to high temperature.. molybdenum etc.
It is possible to predict from the phase diagrams whether an eutectic alloy or a solid solution is formed on cooling a homogeneous liquid containing mixtures of two metals. If the equilibrium between any number of phases is not influenced by gravity. State phase rule and explain the terms involved in it. What is triple point? It is the point at which three phases namely solid. 7. (i) Nichrome (ii) Stainless steel 4. or magnetic forces but are influenced only by pressure. Part B 1. A pure substance in the fused state is allowed to cool slowly and the temperature is noted at different time interval. What are the main purpose of alloy and steel? 2. Give the composition and uses of the following alloy. How is cooling curve drawn. 3. Degree of freedom is defined as. What is Phase diagram? What is the use of studying such diagrams? Phase diagram is a graph obtained by plotting one degree of freedom against another. 5. State phase rule and explain the terms involved. which must be fixed in order to define the system completely”. “the minimum number of independent variable factors such as temperature. 12. The form of the cooling curve indicates the composition of the solid. What is degree of freedom (F)? (or) Comment on the degree of freedom. pressure and concentration. or electrical. 13. What is eutectic point? (or) Define eutectic point. Write note on Heat treatment of steel. liquid and vapour are simultaneously at equilibrium.10. What is thermal analysis? Thermal analysis is a method involving a study of the cooling curves of various compositions of a system during solidification. Explain the significance of alloying. Then graph is plotted between temperature and time. The shapes of the freezing point curves for any system (involving metals) can be determined by thermal analysis. Draw a neat phase diagram and explain the lead-silver system? Briefly write about pattinson’s process. . 6. F=C–P+2 11. then the number of degree of freedom (F) of the system is related to number of components (C) and number of phases (P) by the following phase rule equation. It is the point at which two solid and one liquid phase are in equilibrium. temperature and concentration. 16. 14. Draw a neat one component water system and explain in detail. 15.
Substance which gives out heat on combustion is called fuel. 4. Wood – Peat . UNIT – IV FUELS AND COMBUSTION PART A 1. Primary Fuels:Fuels obtained from natural source (eg: coal) Secondary Fuels: Fuels derived from primary fuels. 5. 2. Define fuel. The main constituent of fuel is carbon.Lignite . It involves the determination of percentage of (i)Moisture content. What is Carbonisation of coal or What is Metallurgical coke? If coal sample is heated at high temperature in the absence of air. How do we classify fuel? Fuels can be classified into two main categories: Primary and Secondary. or How is coke superior to coal. (eg: coke) 3. Differentiate between coal and coke. Name the various determinations of Proximate analysis. large quantity of volatile matter is removed. 6. What is meant by the term Fixed Carbon? It is the pure non-volatile. Higher the percentage of fixed carbon greater is its calorific value. 7. (ii)Volatile matter. This process is known as Carbonisation.Anthracite. thus creating pores in the coal. What is coalifications or Metamorphism of coal. carbon content present in the coal. (iii)Ash content and fixed carbon in coal. The process of conversion or alteration of vegetable matter to anthracite Is called coalification or Metamorphism of coal. Coal Coke It is a primary fuel It is a secondary fuel It burns with heavy smoke It burns easily with little smoke It has high volatile content It has negligible volatile content It has no porosity It has high porosity due to preheating . What are the different varieties of coal? (Or) Write briefly on ranking of coal.Bituminous coal . 8.
. Define calorific value. What is the drawback of presence of sulphur in the coal. 18.. grease and paraffin wax. Write a note on fractional distillation. i. When crude oil is heated. petroleum jelly. 12. SO 2 and SO 3 are harmful and have corrosion effects on equipments. It may be further fractionated into four constituents. Crude oil contains 80-87% Carbon. It is usually expressed in calories. 15. we get different products like petrol. The coal containing sulphur is not suitable for the preparation of metallurgical coke as it affects the properties of the metal. Describe heavy oil. High ash content decreases the calorific value of a fuel. 14. which is then separated out from the oil. kerosene. namely lubricating oil. 17. passed into the fractionating tower and then distilled. etc. 2. What is naphtha? It is obtained by cracking of petroleum and mainly used as thinners for paints and varnishes. Why a solid fuel must have low ash content? Ash is inorganic in nature.e. 13. Calorific value is defined as the amount of heat liberated after burning unit mass of fuel completely. 1. 16. Give the basic composition of crude oil. heavy oil. Crude oil contains several fractions of different boiling point range. around 3% sulphur and oxygen and nitrogen in traces. diesel. What is meant by Refining of petroleum? The process of removing impurities and separating the crude oil into various fractions having different boiling points is called refining of petroleum. What is straight . What is Cottrell’s process in crude oil refining? The crude oil from oil well is an extremely stable emulsion of oil and salt water.9. The combustion products of sulphur. 11. 10. The crude oil is allowed to flow between two highly charged electrodes where colloidal water droplets combine to form large drops. The fraction of petroleum containing C 17 to C30 hydrocarbons and boiling point range of 320 to 400o C is called heavy oil.run gasoline? The gasoline obtained by this fractional distillation is called Straight – run gasoline. 11-15% hydrogen.
Lead deposits on the spark plug and on cylinder walls. 19. Define octane number of petrol? How can it be improved? (A. 24.2005. 23.U. calorific value is high. Significance: Knocking in petrol engine is minimized.U.Dec. (A. 20. The preparation of liquid fuels from solid coal is called Hydrogenation of coal. This can be reduced by adding TEL(Tetra ethyl lead). iso-amyl nitrate. (ii)The moisture. it is converted to gasoline.2006) Octane number is defined as “the percentage of iso-octane and n- heptane”. How can it be improved? Cetane number is defined as” the percentage of cetane present in a mixture of cetane and @-methyl naphthalene. Why is coke used in metallurgical process than coal? (A. When the petrol is mixed with Tetra Ethyl Lead (TEL). which is harmful to engine life. Synthetic petrol is obtained by polymerization of coke oven gases in the presence of a catalyst at around 2000 C. What is leaded petrol?.cetane value of the fuel. 1. Define Cetane number or Cetane rating of a diesel oil. 25. 21.” The cetane number of a diesel oil can be improved by adding dopes like ethyl nitrate. Define synthetic petrol. 26.2007) (i)Percentage of fixed carbon in coke is more.Dec. How will you improve the anti-knocking characteristics of diesel? (A.2006) Anti-knocking characteristics of diesel can be improved by increasing n. Octane number can be improved by adding anti-knock agents like Tetra Ethyl Lead. 27. What is meant by hydrogenation of coal? If coal is heated with hydrogen to high temperature under high pressure.U. sulphur contents are very low and (iii)The mechanical strength. Explain the term knocking of a petrol engine. ash. .U. Dec. 2.2006) Knocking is a kind of explosion due to rapid pressure rise occurring in petrol engine. This creates atmospheric pollution. it is called leaded petrol. 22. Dec. Why should leaded petrol not to be used. Give its significance in automobiles. Cetane value can be increased by adding dopes like ethyl nitrate.Jun.
canola oil. What is CNG? Mention is primary component. describe the manufacture of water gas. Dec. 31.2006. How? (i)Its calorific value is higher (2800 k cal\m3 ). 4. What is producer gas? How is it manufactured? 5. Explain the manufacture of metallurgical coke by Otto-Hoffman method and the recovery of various by products. 9. Jun. beef tallow and pork lard. (ii)It possess less amount of N 2 content and (iii)It is used for the production of H2 power alcohol and carburetted water gas. It is mainly derived from natural gas. Water gas is superior to producer gas. Water gas is a mixture of CO and H2 with small amount of N 2. How is biodiesel manufactured? 10. What is crude oil? What are the various fractions obtained by fractional distillation of crude oil? Mention the compositions & uses. The net calorific value is defined as “the net heat produced.calorific value of ethyl alcohol is 7000kcal/kg. 6. (A. How is bio-dieselmade? It can be made from soy-bean oil.28. Describe the proximate and ultimate analysis of coal and their significance. 33. 30. 3. The primary component present in CNG is methane. PART-B 1.2005. CNG is compressed natural gas used in motor engines nowadays instead of gasoline. What are the good characteristics of good metallurgical coke? 8. 29.2007) Gross or higher calorific value is defined as “the total amount of heat produced. How synthetic petrol is obtained by Bergius and Fischer-Tropsch method.2006) Producer gas is a mixture of CO and N 2 with small amount of H2 . when a unit mass of the fuel is completely burnt and the product of the combustion are allowed to escape.U. With a neat diagram. 2. Jun. What is producer gas and water gas? (A. What is cracking? How is it useful of the preparation of synthetic petrol? 7. What is power alcohol? Blends containing upto 25%alcohol with petrol are for the generation of power is called power alcohol. 32. Define GCV and LCV of fuel. when unit mass of the fuel is completely burnt and the products of combustion are cooled to room temperature.U. How is power alcohol manufactured? .
It emits radioactive rays. July 2008) A fission reaction. it is called sub critical mass. UNIT – V ENERGY SOURCES AND STORAGE DEVICES PART A 1. It occurs at high temperature 3. It does not emit any kind of radioactive rays. Mention four differences between nuclear fission and nuclear fussion reaction. b) Sub-critical mass :- If the mass of the fissionable material is smaller than the critical mass.” 2. 7. Define nuclear fission. It occurs at ordinary temperature (>106 K) It does not give rise to chain 4. It gives rise to chain reaction reaction 5. What is super critical and subcritical mass of U235 ? a) Super critical mass : If the mass of the fissionable material (U235 ) is more than the critical mass. “The process of combination of lighter nuclei in to heavier nuclei. . What is nuclear reactor? The arrangement or equipment used to carry out fission reaction under controlled conditions is called a nuclear reactor. S. it is called super critical mass. Nuclear fission Nuclear fussion 1. 4. with simultaneous liberation of large amount of energy. 2. Define nuclear fussion. What is nuclear chain reaction? (A.U May 2009) “The process of splitting of heavier nucleus into two or more nuclei with simultaneous liberation of large amount of energy. It is the process of breaking a It is the process of combination of heavier nucleus. What are the types of nuclear fission reaction? The nuclear fission reactions are two types 1. (A.” 3. higher nuclei.Controlled fission reactions – Nuclear reactor. where the neutrons from the previous step continue to propagate and repeat the reaction is called nuclear chain reaction. Uncontrolled fission reactions – Atom bomb 2.U. 6.N o.
c.8. Solar cell is the one.(A. Eg:. What are primary and secondary battery? Give examples. they are not chargeable. The reaction occurs only once and after used they become dead. Therefore.weight metal.Lead acid storage cell. They are close contact with each other. Nickel . What are the fissile nucleides and fertile nucleides? i) The fissionable nucleides such as U235 & Pu239 are called fissile nucleides. Feb 2010) (i)Zinc does not dissolved readily in a basic medium.radiation. Why? (A. Li battery is the cell of future. only 7g material is required to produce 1 mole of electron.type semiconductor (such as Si doped with P). June 2009) (i)Its cell voltage is high. 12.U. (ii) The life of alkaline battery is longer than the dry battery. In secondary battery. Therefore. Describe the solar cells. What are the advantages of alkaline battery over dry battery?(A. Eg:. Mercury cell. which converts the solar energy directly into electrical energy.cadmium cell. (iii)Since all the constituents of the battery are solids there is no risk of leakage from the battery and (iv) These battery can be made in a variety of sizes and shapes. the electrode and the electrode reactions can be reversed by passing an external electrical energy. 12. which are buried deep in the sea.U. The waste is packed in concrete barrels. June 2006) In primary battery. they can be recharged by passing electric current and used again and again.U. ii) The non-fissionable nucleides such as U238 & Th232 are called fertile nucleides 11. (ii)Since Li is light. Give a method for disposal of nuclear waste. A heavy nucleus (U235 ). as the current is drawn from it 13. when bombarded by slow moving neutrons. 3V. a. giving off and . b. Two or more neutrons are produced by fission of each nucleus. split into two or more nuclei. In this chemical energy gets converted into electrical energy. What are the characteristics of nuclear fission. 10.Dry cell. All the fission fragments are radio active. The atomic weights of fission products ranges from about 70 to 160. the electrode and the electrode reactions cannot be reversed by passing an external electrical energy. 9. because there is no corrosion on Zn and (iii)Alkaline battery maintains its Voltage. What is the fuel cell or flow battery? In these cells the reactants. products and electrolytes are continuously passing through the cell. d. It consists of a p-type semi conductor (such as Si doped with B) and n. .
Explain the construction and working of lead-acid battery. 6. Dec 2006) Nickel – Cadmium cell consists of a cadmium anode and a metal grid containing a paste of NiO2 acting as a cathode. The electrolyte in this cell is KOH.14. Explain with cell reaction. What are the cell reactions and uses. Write a short note on Breeder reactor. 2. Explain alkaline batteries with a suitable example. Describe the lithium battery with reactions. 7. PART-B 1. 4. 3. 5. How is NICAD battery constructed. How is NICAD battery constructed? (A. With a neat sketch explain the functioning of nuclear reactor.U. . Describe the construction of Ni-Cd battery.
a) i) What are the main purpose of alloy and steel? (8) ii) State phase rule and explain the terms involved in it. ii) How synthetic petrol is prepared by Bergius method. 4. 8. Define hardness of water.Marks :100 Answer all questions Part (10 × 2 =20) 1. What is chemisorption? Give an example.a) Explain in detail municipal treatment of water.B. Give a n example.a) i)Explain the manufactur e of metallurgical coke by Otto-Hoffman method and recovery of byproducts. P. What are enzymes. (16) 14. (16) Or b). Give the conditions in which it fails. (8) . (8) Or b)i) How is water gas manufactured. 6. What is carborundum? How it is prepared. 5. What are primary cells. Give an example. What is multiplication factor? mention its significance.a) i) Derive Freundlich’s adsorption isotherm. (8) ii) Derive the kinetic equation of Langmuir-Hinshelwood mechanism. 2. (8) 12. (8). 7.COLLEGE OF ENGINEERING MODEL QUESTION PAPER . (8) 13.I ENGINEERING CHEMISTRY (Common to All) Year/Sem : I/II Time:3Hrs Subject Code: CY8151 Ma x.i) Defind the term desalin ation describe the desalination term by RO method . Define nuclear fission.(8) ii) Explain the role of adsorption in catalysis? Give examples. What are scales and sludges? 3. What is leaded petrol? Give it’s significance. 9. What is metallurgical coke? 10. (8) Or b) i) Discuss the role of activated carbon in abatement of air pollution and waste water treatment. (8) (ii) What are boiler troubles? How are they caused suggest step to minimise the boiler troubles. Part B(5 × 16 = 80) 11. (8) Or b) Write note on Heat treatment of steel.
(8). ii) How is Bio-diesel manufactured. (8) ii) State any four characteristics of a nuclear fission reaction. (8) Or b) i)Write a brief note on Breeder reactor . (8) 15.a)i) Give an account of Lead-A cid battery with applications.Describ e the construction and working of H2 -O 2 fuelcell. ii)What is fuel cell .(8) .
6.(8) ii) What are boiler troubles. 12.a) (i)Explain about the estimation of hardness by EDTA method. Draw the cooling curves of a pure substance and a substance and discuss. What is meant by “Reverse Osmosis”? 2.(8) ii) Explain the contact theory of catalysis.(8) ii) What is thermal analysis. What is carborundum? How it is prepared. Distinguish between Proximate and ultimate analysis. P. Give a n eg. What is super critical and subcritical mass of U235 ? 7.a)i) Discuss the role of adsorbents in pollution abatement.(8) 13. What is break-point of chlorination? 3.(8).i) Define the term desalination describe the desalination term by RO method . What is a cell? Mention its ty pes. 4. What is leaded petrol give it s significance. (8) Or b).(8) ii)Write a short note on Internal conditioning.(8) Or b)i) Derive the kinetic equation of Langmuir-Hinshelwood mechanism.a)i) Give the composition and uses of the following alloy. What is thermal spalling? How it is avoided? 8. What are primary cells.(8) 1)Nichrome 2)Stainless steel ii) Explain the significance of alloying. 9. 10. Part B(5 × 16 = 80) 11.COLLEGE OF ENGINEERING MODEL QUESTION PAPER -II ENGINEERING CHEMISTRY (Common to All) Year/Sem : I/I Time:3Hrs Subject Code:CY8151 Ma x.How are they caused suggest step to minimise the boiler troubles. What is reference electrode. 5.B.(8) ii) Derive Langmuir adsorption isotherm. Give an example.(8) Or b)i) Draw a neat phase diagram and explain the lead-silver system? Briefly write about pattinson’s process.Marks :100 Answer all questions Part A(10 × 2 = 20) 1.(8) .
(8) ii) Describe the working of an photogalvanic cell Or b) i)Write a brief note on Breeder reactor. ii) What is fuel cell.(8) .a)i) Explain the manufactur e of metallurgical coke by Otto-Hoffman method and recovery of byproducts. ii) How synthetic petrol is pr epared by Bergius method.(8) ii) What is crude oil? What are the various fractions obtained by fractional distillation of crude oil? Mention the compositions & uses.(8) Or b)i) How synthetic petrol is o btained by Bergius and Fischer-Tropsch method.(8). What are the cell reactions and uses.(8).14..a)i) Describe the construction of Ni-Cd battery. Describe the consruction and working of H2 -O 2 fuel cell..(8) 15.
(8) (ii) Draw a neat one component water system and explain in detail.(16) (or) (b) (i) State phase rule and explain the terms involved in it. State phase rule and explain the terms involved.(16) (or) (b) (i) Explain how demineralization of water is done in water technology?(8) (ii) Describe the reverse osmosis method for desalination of water.(8) 12. What is calgon conditioning? How is it functioning in water treatment? 3. What is Heat treatment of alloy? 6.B.(8) 14. What is the role of adsorbent in catalysis? 5. What is mean by calorific value of fuel? 9. Give an example.(8) (ii) Explain the contact theory of catalysis. (a) (i) Write a detailed account on petroleum processing and fractions.COLLEGE OF ENGINEERING MODEL QUESTION PAPER -III ENGINEERING CHEMISTRY (Common to All) Year/Sem : I/I Time:3Hrs Subject Code:CY8151 Ma x. (a) (i) Give any three factors on which adsorption depends.(8) (ii)Applying Michaelis and Menton equation discuss the kinetics of enzyme catalyzed reactions. P. What is Chemisorption? Give an example. How is coke superior to coal? 8. (a) Discuss the disadvantage of using hard water in boiler. (a) Write a short note on Heat treatment of alloy. Define Hardness of Water. (8) (ii) Describe the ultimate analysis of coal. 2. 10. 4.(8) 13.(8) . What are primary cells? Part – B (5 x 16 = 80 Marks) 11.(8) (or) (b) (i) Explain the following with suitable examples Heterogeneous catalysis and Acid-Base catalysis.Marks :100 Answer all questions Part A(10 x 2 =20) 1. Define Nuclear Fission. 7.
(8) 15.(8) (ii) Explain the flue gas analysis by orsat method with suitable diagram. (or) (b) (i) Describe the Otto Hoffman’s process for preparing coal.(8) (or) (b) (i) Explain the construction and working of lead-acid battery.(8) (ii) Write a note on photo-voltaic cell.(8) . (a) (i) Give an account of Light water nuclear reactor with a neat diagram.(8) (ii) With a neat sketch explain the functioning of H2 -O2 fuel cell.