Download SGBAU BSc 2019 Summer 2nd Sem Industrial Chemistry Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 2nd Sem Industrial Chemistry Previous Question Paper

AW-1659
B.Sc. (Part?l) Scmestcr?II Examination
INDUSTRIAL CHEMISTRY (R/V)
Time : Thrcc Hours] [Maximum Marks : 80
Note :? (1) Question No. 1 is compulsory and carries 8 marks.
I. (A)
(B)
(2) Remaining all six questions carry 12 marks each.
(3) Use of scienti?c calculator is allowed.
(4) Draw diagram wherever necessary.
Fill in the blanks :
(i) Adsorption phenomenon occurs at __ solid only.
(ii) The differences in ____ pressures of different components ofa liquid mixture
forms the basis of distillation.
(iii) Percolation of a liquid through a ?xed bed of solid is called as W
(iv) Vacuum crystallisation is used for __ 7 sensitit'e materials. 2
Choose the correct alternatives :
(i) Kick?s law is associated with this unit operation :
(21) Screening (b) Mixing
(c) Size Reduction (d) Filtration
(ii) Axial ?ow and radial ?ow are the types of :
(a) Impellers (b) 'l'urbincs
(c) Paddles (d) Propellers
(iii) The dryer commonly used for getting material in the continuous sheet form such
as paper and cloth is :
(a) Tray dryer (b) Spray dryer
(0) Rotary dryer (d) Drum dryer.
(iv) Which of the following statements is not true in case of chemical adsorption ??
(a) Caused by Chemical bond formation
(b) It is reversible
(c) Increases with increase in temperature
(d) Forms unimolecular layer 2
YBC?15233 1 (Contd.)

(C) Answer in one sentence
(i) De?ne adsorption.
(ii) What is screening ?
(iii) De?ne drying.
(iv) What is cvapmator economy '? 4
UNIT?I
2. (A) Explain short tube evaporator I 4
(B) Give an account of forced circulation evaporator. 4
(C) Describe packed cclumn for distillation. 4
OR
3. (P) Discuss bubble cap tray in plitc column distillation. 4
(Q) Explain continuous distillation with recti?cation and stripping. 4
(R) Give an account 01' climbing ?lrn evaporator. 4
UNIT?[l
4. (A) Describe spray column extractor. 4
(B) Discuss the properties of a solvent used in liquid-liquid extraction. 4
(C) Give an account of rotoccl. 4
OR
5. (P) Explain Kennedy ?xtractut ' 4
(Q) Discuss ?:ountercurrent multirle contact I'Shank?s system). 4
(R) Describe mixer and settler as extracting equipment. 4
UNIT?III
6. (A) Discuss the construction and working of vacuum crystalliser. 6
(B) Give an account of spra?v dr) er with respect to its construction and working. 6
OR
7. (P) Give the construction and Working of tray dryer. 6
(Q) Explain construction and working of Oslo cooler crystalliser. 6
UNIT?IV
8. (A) Give an account of jaw crusher. 4
(B) Describe Trommel scrccns. 4
(C) Discuss the characteristics 01? ?lter medium. - 4
OR
YBC ~-15233 ?9
- (Contd.)

12.
(P)
(Q)
(R)
(A)
(B)
. (P)
(Q)
(A)
(B)
(C)
. (P)
(Q)
(R)
Give the construction and working of Grizzly screens.
Discuss ball mill.
Explain the principle of cake ?ltration.
UNIT?V
Give an account of mixing of liquids with liquids.
Explain tumbling mixers.
OR
Discuss ribbon blender.
Explain :
(i) Banbury mixer.
(ii) Pug mills.
UNIT?VI
Explain any four applications of adsorption.
Give an account of mechanism of adsorption.
Discuss any four properties of a catalyst.
0R
Give an account of Langmuir adsorption isotherm.
Explain :
(i) Autocatalysis.
(ii) Catalyst deactivation.
Discuss the mechanism of catalysis through intermediate compound formation.
YBC?15233 3
L1.)
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