UNIT -I
Q1.How will you determine the alkanity of water sample containing hydroxide and carbonates ions?
Q.2.Write short notes on the following:
a) Zeolites and their use water softening.
b) Internal conditioning of boiler feed water.
c) Boilers corrosion and its control.
d) Break point chlorination and its advantages.
e) Coagulants and their role.
f) Scale formation in boiler and its advantages.
Q.3.State the principal and reactions of EDTA method for the determination of hardness of water?
Q.4.write the various steps for purification of municipal water supply?
Q.5.explain disinfection of water .Suggest various methods and chemicals used for disinfection of water?
Q.6.compare Zeolite method and ion exchange resin method of water softening?
Q.7.Explain why?
a) Hard water consumes a lot of soap.
b)Magnesium bicarbonate require double amount of lime for softening.
Q.8.One gram of CaCO3 was dissolved in dilute HCl and the solution was mede to one litre by dilution.50 ml of this solution required 40 ml of EDTA solution,while 50 ml of the sample water required 20 ml of EDTA solution.Calculate total hardness of water sample.
Q.9.100 ml of a water sample required 20 ml of N/50 H2SO4 for neutralization to phenolphthalein end point.After this ,methyl orange indicator was added to this and further acid required was 15ml.Calculate the type and the extent of alkanity.
Q.10.How many grams of MgCO3 dissolved per litre gives 84 ppm of hardness?
UNIT –II
Q.1.Describe the fluidized bed catalytic cracking with a neat and clean sketch diagram?
Q.2.Explain the term Knocking, in an I.C. Engine .Define octane number ? How is cracking related to chemical structure of various hydrocarbons of petrol?
Q.3.What do you mean by proximate analysis and ultimate analysis? What are the parameters determined under them and what is their significance in evaluation of the coal quality?
Q.4. Discuss Beehives Oven method for manufacture of coke?
Q.5.Define the term CV, HCV, LCV?
Q.6.What is carbonization ?Describe Otto-Hoffman method for manufacture of menufacture of metallurgical coke?
Q.7Write short notes on the following:
a) Differentaite between thermal cracking and catalytic cracking.
b)Differentiate proximate and ultimate analysis of coal.
Q.8.Discribe and Draw a well lebeled diagram of Bomb Calorimeter for the determination of calorific value of a solid fuel?
Q.9.The percentage composition of a sample of snthracite coal is C=90,H=3.5,O=3.0,N=1.0,S=0.5 and the remainder being ash (by weight).
Estimate:
(I) The minimum weight of air required for the combustion of 1 kg of this fuel.
(II)The composition of dry products of combustion by volume ,if 50%excess air is supplied.
Q.10.A sample of fuel on analysis gave the following results:
C=87%,H=4%,N=1.2%,S=2%,O=4%,Ash=1.8%.
Calculate the minimum weight of air required for complete combustion of 500 gm of this fuel.
UNIT –III
Q.1.Explain the following properties of lubricants and give their significance:
a)Aniline point
b)Cloud and pour point
Q.2.Explain in brief :
a)Mechanism of fluid film lubricants
b)Characteristics feature of synthetic lubricants
c)Grease
d)Viscosity index
Q.3.How would be determine the viscosity of a lubricating oil using Redwood Viscometer?
Q.4.Describe the mechanism of hydrodynamic lubrication?
Q.5.Draw a labeled diagram of Rotary kiln? Write the chemical reaction taking place in various zones of rotary kiln.
Q.6.Write short notes opn:
a)Neutral refractiries
b)RUL test
c)Portland Cement
Q.7.Describe in brief of manufacture of cement?Give percentage composition of the constitutional compoundsof cement and the reactions involved during setting and hardening of cement?
Q.8.ALubricating oil has a S.U.S. of 58 seconds at 2100 F and of 600 seconds at 1000 F .The high viscosity index standard oil has S.U.V. of 58 seconds at 210 0 F and 400 seconds at 1000 F. The low viscosity index standard oil has a S.U.V.of 58 seconds at
210 0 F and 800 seconds at 1000 F .Calculate the viscosity index of the oil.
Q.9.Define and classify refractories giving at least one example of each class.
Q.10.write about the ISI Specifications of cements.
UNIT –IV
Q.1.describe reaction mechanism in polymers by giving:
a)Free radical polymerization
b)Ionic polymerization
Q.2.Write short notes on:
a)Thermoplastic and thermosetting resins
b)Vulcanization of rubber
C)Nylons
Q.3.How is polyethylene prepared commercially? Differentiate between LDPE and HDPE.
Q.4.How will you synthesize Nylon 6:6 from 1,3, -butadiene?
Q.5.What are polymers? Classify them on the basis of structure with suitable example. Explain free radical polymerization mechanism?
Q.6.Write preparation, properties and uses of the following:
a)Nylon 66 b)Buna N
c) Bakelite d)PVC
e)PMMA f)Buna S
Q.7.Write short notes on:
a) Silicons Rubber
b) Linerar ,branched and crosslinked polymers
c) Decron
Q.8.Name the chemical process which is employed to improve mechanical strength of natural rubber. How it is performed?
Q.9.Write the structure of four addition polymers and four conduction polymers with their respective monomers?
Q.10.Discuss the preparation methods of:
a)Plexiglass
b)Neoprene
UNIT –V
Q.1.Derive Beer –Lamberts law and application of UV Spectroscopy?
Q.2.Write short notes on:
a)Chromatography
b)NMR Spectroscopy
Q.3.Write a short notes on Gas Chromatography.
Q.4.Draw a labeled diagram of instrument used in gas chromatography.Write the applications of gas chromatography?
Q.5.Draw a block diagram of calorimeter and explain its working giving experimental technique?
Q.6. Discuss brief introduction of electronic spectroscopy?
Q.7. Write short notes on:
a) Applications of IR Spectroscopy
b) Applications of UVSpectroscopy
Q.8. Discuss EPR?
Q.9.Describe the principal of NMR Spectroscopy?
Q.10.Write the types of molecular vibrations?
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