Textile Fibres (MCQ : MODULE 7- Synthetic fibers )

 

Question 1: Match the elements in Group I and II

Group I	Group II
P. Polypropylene	1. Poor hydrolytic stability
Q. Cotton	2. Excellent thermal resistance
R. Polyester	3. Excellent elastic recovery
S. Wool	4. Poor resistance to acid
	5. Higher wet strength
	6. Excellent chemical resistance

P-6, Q-5, R-1, S-3
P-2, Q-5, R-6, S-3
P-4, Q-5, R-1, S-2
P-6, Q-1, R-2, S-3

Question 2: A fiber that will float on water is

Nylon
Polyester
Acrylic
Polypropylene

Question 3: The moisture regain (%) of nylon fiber is in the range

2-3
3.5-4.5
5-6
6.5-7.5

Question 4: Nylon 6, Nylon 66, wool and silk can be classified as

Polyethers
Polyesters
Polyamides
Polyolefins

Question 5: Polypropylene is unstable to both heat and light because of

low melting point
very low Tg
presence of tertiary carbon
Helical configuration of polymer chains

Question 6: Consider the elements in Group I and II and choose the correct alternatives

Group I	Group II
P. Viscose rayon	1. Unicellular
Q Jute	2 Kidney shaped cross section
R Wet spun acrylic fiber	3 Ultimate cells
S Cotton	4 Serrated cross section
	5 Dog bone shaped cross section
	6 Cationic dyeable

P-4, Q-3, R-2, S-1
P-4, Q-3, R-5, S-1
P-4, Q-1, R-6, S-2
P-4, Q-1, R-5, S-2

Question 7: The incorrect statement amongst the following is,

Jute is a multicellular fiber
Caprolactum is the raw material of Nylon 6
The density of Polyester is more than cotton
Viscose is a regenerated fiber

Question 8: Among the following, the fiber that has the lowest density is,

Cotton
Nylon
Polyester
Polypropylene

Question 9: ………………is used as suture thread in surgery

nylon
bio-degradable polyester
polyester
cotton

Question 10: Pendant CH₃ Groups when are on one side of the chain, it is _________ polypropylene

isotactic
atactic
syndiotactic
amorphous

Question 11: Nylon 66 is manufactured using…………..

caprolactum
adipic acid
ethylene glycol
adipic acid and hexamethylene diamine

Question 12: ……………..spinning is used in manufacture of polyester

wet
solution
day
melt

Question 13: One of the raw materials of polyester is ……………..

caprolactum
terephthalic acid
adipic acid
citric acid

Question 14: Moisture regain of tri-acetate rayon is ………………..than the cotton fibre.

lower
higher
equal
not comparable

Question 15: The density of polyester fibre is

More than cotton
Less than cotton but more than nylon
Less than nylon but more than polypropylene
Nearly equal to that of acrylic fibre

Question 16: Photo stability of………………….fibre is poor

polyethylene
polyester
nylon
polypropylene

Question 17: Polyester in dull form is obtained using…………………

acetate
TiO₂
alkali
ZnO

 

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