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Veer Narmad South Gujarat University 2010-3rd Sem B.E Textile Fibres - 2( New Syllabus ) ( ) ( T.T & T.P ) - Question Paper

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RN-8141

B. E. - II (Sem. Ill) (T.T. & T.P.) Examination May/June - 2010 Textile Fibres [132901]

(New Syllabus as per GTU)

Time : 3 Hours]

[Total Marks : 100

Instructions :

(1)

N Seat No.:

6silq<3i Puunki(l faaim SuwiA u* <KH=fl. Fillup strictly the details of signs on your answer book.

Name of the Examination :

B. E. - 2 (Sem. 3) (T.T. & T.P.)

Name of the Subject:

Textile Fibres [132901]

-Subject Code No.:

8

1

4

1

-Section No. (1,2......)

Student's Signature

1&2

(2) Answer to the two sections must be written in separate answer books.

(3) Figures to the right indicate full marks.

(4) Tie the two sections separately.

SECTION -1

Match the following :

(a)

(b)

	A		B
(a)	Kapok	(i)	Australia
(b)	Wool	(ii)	Egypt
(c)	Cotton	(iii)	Bangladesh
(d)	Silk	(iv)	Indonesia
(e)	Jute	(v)	China
State whether true		or false		5
(i)	The epithelial cells in SCALES.		the wool fibre	are called
(ii)	The mulberry BOMBYX Mori	silk is	produced by	the moth
(iii) I	CASHMERE is	a fruit fibre. 1		[Contd...

(iv) Staple length of ASIATIC cotton is less than one inch.

(v) Another name for PALF fibre is PINA.

(c) Explain in detail the growth, manufacture and 10

production of cotton fibre.

2 Explain in detail the following BAST fibres: 15

(i) RAMIE

(ii) JUTE

(iii) BAMBOO

OR

2 (a) Explain in detail the microscopic appearance of 5

Wool fibre.

(b) Explain in detail the physical and chemical 10

properties of wool fibres.

3 Write short notes on (any three) 15

(i) Minor natural fibres

(ii) Minor hair fibres

(iii) Types of cotton fibre

(iv) Properties of jute fibres.

SECTION - II

4 (a) Answer the following : 10

(i) Acrylic fibres are spun by_or_spinning

method.

(ii) Give melting point of Nylon 6 and Nylon 6,6.

(iii) DINEL is trade name of_ fibre.

(iv) Give the name of monomers used for manufacturing of SARAN fibre.

(v) List the raw material of PET mfg.

(vi) State two end uses of vinyon fibre.

RN-8141] 2 [Contd...

(viii) Melting point of PAN fibre is

(ix) Give safe ironing temperature of Nylon 6, and Nylon 6,6.

(x) Give two trade name of Diacetate fibres.

spinning methods of man-made fibres.

5 (a) Describe manufcaturing of viscose rayon with 10

neat sketch.

(b) Discuss various properties of viscose rayon in detail. 5

OR

5 Explain manufacturing process of cuprammonium rayon. 15 Also discuss its properties in detail.

6 Write short notes on any three : 15

(a) Vinyon fibres

(b) Acetate rayon

(c) Preparation of Nylon 6 and Nylon 6,6

(d) Casein fibres.

RN-8141] 3 [ 100 ]