Sardar Patel College of Engineering 2007 B.Tech Electronics and Communications Engineering Applied Chemistry - Question Paper
APPLIED CHEMISTRY (REVISED COURSE)
,
5340-07. CD..6264
(2 Hours) Total Marks: 75
N.S. (1) ques. No.1 is Compulsory.
(2) From remaining 6 ques. attempt any four.
(3) Figures to the right indicate full marks.
(4) All ques. carry equal marks.
1. Attempt any 5 from the subsequent :- (15)
(a) What do you mean by hardness of water? Distinguish ranging from alkaline and non-alkaline
hardness of water.
(b) What is co-polymerization? discuss with the help of suitable example.
(c) discuss the structure, properties and uses of fullerence. .
(d) elaborate blended oils? How are they superior to vegetable and mineral oils?
(e) Name the various renewable and non-renewable sources of energy. Distinguish ranging from
conventional and non-conventional energy.
(f) discuss the term "glass transition temperature". What is its significance?
(g) provide the demerits of phase rule.
2. (a) Write the synthesis, properties and uses of any 2 of the subsequent :- (6)
(i) Polythene' .
(ii) Buna-S
(iii) Buna-N
(b) What is fuel cell? discuss the principle and working of hydrogen-oxygen fuel cell. (5)
(C) 800 liters of raw water was soften by zeolite softener. After it got exhausted needed 40 (4)
liters of NaCI solution containing 110 gm per liter of NaCI for its regeneration. compute
the hardness of water.
3. (a) State and discuss phase rule. explain the application of phase rule to 1 component water (7)
(b) discuss any 2 of the subsequent terms :- (4)
(i) Crystallinity of polymer
(ii) Tacticity
(iii) Viscoelasticity.
(c) three gm of liquid lubricant was saponified with potassium hydroxide solution. After saponification (4)
the mixture was titrated against 0.5 N HCL solution. The burette studying was obtained to be
12 ml. If blank titration burette studying was 36 ml, compute the saponification number of
the lubricant.
~
4.(a) elaborate (i) SWCNT and (ii) MWCNT? define the production of SWCNT by LASER (5)
method.
(b) compute lime (90%) pure and soda (95%) pure needed for softening of 20000 liters of (5)
water containing subsequent impurities :-
(i) Ca(HC03)2 = 81 mg per litre
(ii) MgC03 = 42 mg per litre
(iii) NaAI02 = 4.1 mg per litre
(iv) HCI = 3.65 mg per litre
(v) Ca(N03)2 = 82 mg per litre
(vi) NaCI = 4.5 mg per litre
(At Wt. Ca = 40, H = 1, C = 12, ° = 16, Mg = 24, Na = 23, AI = 27, CI = 35.5, N = 14)
(c) What is polymerization? discuss condensation polymerization with the help of an example. (5)
Con. 5340-CD-6264-07. 2
5. (a) discuss the theory of Lime-soda process with reference to the various functions of lime (4)
and soda.
(b) elaborate lubricants.? discuss the mechanism of thin film lubrication in detail. (6)
(c) Write short notes on any 2 the subsequent :- (5)
(i) Nanocones
(ii) Haeckelites
(Hi) Alkaline batteries.
6. (a) discuss vulcanization giving examples. Distinguish ranging from vulcanized and non-vulcanized (6)
rubber
(b) elaborate alloys steels? elaborate the effects of subsequent alloying elements on alloy steels :- (4)
(i) Nickel'
(ii) Chromium
(Hi) Cobalt
(iv) Tungsten.
(c) provide the composition of biogas. define the method for production of biogas from animal (5)
waste.
7. (a) What is meant by fabrication of plastics? Name various methods of fabrications. (6)
discuss transfer moulding with the help of a neat diagram.
(b) discuss any 2 of the subsequent properties of lubricants :- (6)
(i) Flash point and fire point temperature'
(H) cloud point and pour point temperature
(Hi) Saphonification number.
(c) discuss the terms - (3)
(i) B.O.D.
(ii) C.O.D.
What is their significance?
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Con. 5340-07. (REVISED COURSE) CD-6264
(2 Hours) [ Total Marks : 75
N.B. (1) Question No. 1 is compulsory.
(2) From remaining six questions attempt any four.
(3) Figures to the right indicate full marks.
(4) AN questions carry equal marks,
1. Attempt any five from the following : 15
(a) What do you mean by hardness of water ? Distinguish between alkaline and non-alkaiine hardness of water.
(b) What is co-polymerization ? Explain with the heip of suitable example.
(c) Explain the structure, properties and uses of fullerence.
(d) What are blended oils ? How are they superior to vegetable and mineral oils ?
(e) Name the different renewable and non-renewable sources of energy. Distinguish between conventionai and non-conventionai energy.
(f) Explain the term glass transition temperature. What is its significance ?
(g) Give the demerits of phase rule.
2. (a) Write the synthesis, properties and uses of any two of the following 6
(i) Polythene
(ii) Buna-S
(iii) Buna-N
(b) What is fuel cell ? Explain the principle and working of hydrogen-oxygen fuel cell. 5
(c) 800 liters of raw water was soften by zeolite softener. After it got exhausted required 40 4 liters of NaCI solution containing 110 gm per liter of NaC! for its regeneration. Calculate
the hardness of water.
3. (a) State and explain phase rule. Discuss the application of phase rule to one component water 7
system.
(b) Explain any two of the following terms : 4
(i) Crystallinity of polymer
(it) Tacticity
(iii) Viscoelasticity.
(c) 3 gm of fiquid lubricant was saponified with potassium hydroxide solution. After saponification 4 the mixture was titrated against 0.5 N HCL solution. The burette reading was found to be
12 mi. If blank titration burette reading was 36 ml, calculate the saponification number of the lubricant.
4. (a) What are (i) SWCNT and (ii) MWCNT ? Describe the production of SWCNT by LASER 6 method.
(b) Calculate lime (90%) pure and soda (95%) pure required for softening of 20000 liters of 5 water containing following impurities :
(i) Ca(HC03)2 - 81 mg per litre
(ii) MgC03 = 42 mg per litre
(iii) NaAI02~ 4.1 mg per litre
(iv) HCI - 3.65 mg per litre
(v) Ca(N03)2 = 82 mg per litre
(vi) NaCI = 4,5 mg per litre
(At Wt, Ca = 40, H = 1, C = 12, O - 16, Mg = 24, Na = 23, Al = 27, Ci = 35-5, N = 14)
(c) What is polymerization ? Explain condensation polymerization with the help of an example. 4
5. (a) Explain the theory of Lime-soda process with reference to the different functions of lime
and soda.
(b) What are lubricants.? Explain the mechanism of thin film lubrication in detail.
(c) Write short notes on any two the following :
(i) Nanocones .
(ii) Haecketites
(iii) Alkaline batteries.
6. (a) Explain vulcanization giving examples. Distinguish between vulcanized and non-vulcanized
rubber.
(b) What are alloys steels ? What are the effects of following aifoying elements on ailoy steels
(i) Nickel
(ii) Chromium
(iii) Cobalt .
(iv) Tungsten. '
(c) Give the composition of biogas. Describe the method for production of btogas from animal waste.
7, (a) What is meant by fabrication of plastics ? Name different methods of fabrications. Explain transfer moulding with the help of a neat diagram.
(b) Explain any two of the following properties of lubricants :
(i) Flash point and fire point temperature
(ii) Cloud point and pour point temperature
(iii) Saphonification number.
(c) Explain the terms
(i) B.O.D,
(ii) C.O.D.
What is their significance ?
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