Veer Narmad South Gujarat University 2010-3rd Sem B.E Textile Processing - 1 - 2 ( ) ( T.T ) - Question Paper
RN-8153
B. E. II (Sem. Ill) (Textile Technology) Examination May/June - 2010 Textile Processing - I
(New Scheme)
Time : 3 Hours]
[Total Marks : 100
Instructions :
Seat No.:
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Fillup strictly the details of signs on your answer book.
Name of the Examination :
B. E. 2 (Sem. 3) (Textile Technology)
Name of the Subject:
Textile Processing - 1
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-Subject Code No. |
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-Section No. (1,2,.....): 1&2 |
(2) Answers to the two sections must be written in separate answer books.
Student's Signature
(3) Figures to the right indicate full marks.
(4) Tie two sections separately.
SECTION - I
(a) Answer the following objective questions :
10
(i) Give example of any two natural impurities.
(ii) Enlist different methods for measurement of efficiency of desizing ?
(iii) There are three types of impurities in cotton _, _ and_.
(iv) Enlist different oxidative desizing methods.
(v) What is the purpose of scouring ?
(vi) Which pre-cleaning process of cotton follows the principle same as the grass cutter ?
(vii) In gas singeing the rollers are heated with gas burners. TRUE OR FALSE. Justify.
(viii) Desizing with chlorine is also known as_.
(ix) For semi-continuous scouring _
system is employed.
(x) What is the function of chelating agents in scouring ?
(b) Explain oxidative desizing methods in detail.
10
(a) Explain working of shearing and cropping machine 8 with neat sketch.
(b) Describe working of pressure kier with neat diagram. 7 Give recipe for scouring in kier.
OR
(a) Enlist objectives of mercerization and explain 8 yarn mercerization in detail.
(b) Describe the role of various ingredients used in 7 scouring.
3 Write short notes on any three of the following : 15
(a) Lock and Key mechanism
(b) Vaporloc unit
(c) Properties and bleaching action of hydrogen peroxide
(d) Chemicking.
4 (a) Answer the following objective questions : 10
(i) Give classificaion of reactive dyes.
(ii) Azoic dyes are also known as ingrain dyes. True/False
(iii) Write name of any two cheese dyeing machines.
(iv) What is the function of common salt in reactive dyeing ?
(v) When vat dyes are converted into soluble form, they are called_.
(vi) Malt enzymes are obtained from vegetables. TRUE OR FALSE. Justify.
(vii) For scouring in batch wise form which machines are used ?
(viii) If cotton fabric is mercerized in tension free condition its_increases.
(ix) Mercerization process was named after its inventor
(x) Enzymes are _ catalyst.
(b) Explain working of Winch dyeing machine in detail 10 with neat sketch.
(a) Explain working of jigger dyeing machine in detail 10 with neat diagram.
(b) Give detail classification of vat dye. 5
OR
Describe in detail, various methods for application of 15
reactive dyes on cotton.
6 Write short notes on any three of the following : 15
(a) Azoic colour
(b) Application of basic dyes on cotton
(c) Chlorine desizing
(d) Plate singeing.
RN-8153] 3 [ 100 ]
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| Earning: Approval pending. |
