STUPIDSID
Answer any one question from 1 & 2
1 (a)
Define softening of water. Describe the Zeolite method of softening of hard water with the help of neat and labelled diagram.
6 M
1 (b)
What is boiler corrosion. Discuss its causes?
4 M
1 (c)
Write short note on any two-
i) Caustic embrittlement
ii) Chlorination
iii) CaCO3 equivalent
i) Caustic embrittlement
ii) Chlorination
iii) CaCO3 equivalent
4 M
2 (a)
Define hardness of water. Discuss the internal treatment method of water softening.
6 M
2 (b)
What is Boiler Trouble? Explain the causes of scale formation.
4 M
2 (c)
A sample of water on analysis was found to contain the fllowing Ca(HCO3)2 = 4 mg/l, Mg(HCO3)2= 6 mg/l, CaSO4 = 8 mg/l, MgSO4 = 10 mg/l. Calculate the temporary, permanent and total hardness of water in ppm, °Cl and °Fr.
4 M
Answer any one question from 3 & 4
3 (a)
Define calorific value. How it is determine by bomb calorimeter?
6 M
3 (b)
Discuss the parameters of ultimate analysis of coal?
4 M
3 (c)
Write short note on any two-
i) Anti knock compound
ii) Octane No
iii) Carbanization
i) Anti knock compound
ii) Octane No
iii) Carbanization
4 M
4 (a)
Describe the Otto-Hoffmann's method for the manufacture of coke. Write the recovery of by products.
7 M
4 (b)
On burning 0.83 g of a solid fuel in a bomb calorimeter, the temperature of 3500g of water increases from 26.5° C to 29.2° C. Water equivalent of calorimeter and latent heat of steam are 385g and 587 cal/g respectively. If the fuel contains 0.7% hydrogen, calculate its gross and net calorific value?
7 M
Answer any one question from 5 & 6
5 (a)
Define lubricant. Discuss the classification of lubricants.
6 M
5 (b)
Write short note on any two:
i) Saponification value
ii) Thermal spalling
iii) Blended oil
i) Saponification value
ii) Thermal spalling
iii) Blended oil
4 M
5 (c)
Explain cement manufacture by wet process.
4 M
6 (a)
Define lubrication. Describe hydrodynamic mechanism of lubrication.
6 M
6 (b)
What are refractories. Describe the properties of refractories.
4 M
6 (c)
An oil sample under test has a Saybolt universal viscosity same as that of Standard Gulf oil (low viscosity standard) and Pennsylvanian oil (high viscosity index standard) at 100°F are 61758 and 420 respectively. Calculate viscosity index of the sample oil.
4 M
Answer any one question from 7 & 8
7 (a)
Define polymerisation. Explain free radicals mechanism of polymerisation.
6 M
7 (b)
Write preparation, properties and uses of buna-N.
4 M
7 (c)
Explain condensation polymerisation with two examples.
4 M
8 (a)
Discuss the classification of polymers on the basis of molecular forces.
6 M
8 (b)
Explain polyvinyl chloride is stronger and tougher than polyethylene.
4 M
8 (c)
Write short note on any two-
i) Vulcanisation
ii) Phenolic Resin
iii) Nylon-6,6
i) Vulcanisation
ii) Phenolic Resin
iii) Nylon-6,6
4 M
Answer any one question from 9 & 10
9 (a)
Discuss in brief the type of molecular vibrations.
6 M
9 (b)
Explain Gas Liquid Chromatography.
4 M
9 (c)
Write short note on any two-
i) Lambert Beer law
ii) Chemical shift
iii) Partition chromatography
i) Lambert Beer law
ii) Chemical shift
iii) Partition chromatography
4 M
10 (a)
Define spectroscopy discuss the principle and working of NMR spectroscopy.
6 M
10 (b)
Write short note on application of UV spectroscopy.
4 M
10 (c)
Write short note on any two-
i) Stretching and Bending vibrations
ii) Chromophores
iii) Significance of IR spectroscopy
i) Stretching and Bending vibrations
ii) Chromophores
iii) Significance of IR spectroscopy
4 M
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