B:-Melting, glass transition, crystallization
C:-Crystallization, glass transition, melting
D:-Glass transition, melting, crystallization
Correct Answer:- Option-A
Question58:-Which one of the synthetic filament properties is not controlled by the drawing?
A:-Orientation
B:-Crystallinity
C:-Birefringence
D:-Molecular weight
Correct Answer:- Option-D
Question59:-Which one of the following materials has highest strength/weight ratio?
A:-Steel
-Nylon
C:-Kevlar
D:-Polyester
Correct Answer:- Option-C
Question60:-Ziegler-Natta catalyst is essential for the production of
A:-Kevlar
-Polypropylene
C:-Acrylic
D:-Cellulose triacetate
Correct Answer:- Option-B
Question61:-If d is the fibre diameter, air-flow rate through a plug of fibres is proportional to
A:-‘sqrt(d)*
-d
:-0^(2)`
0:- ` 0^(3)`
Correct Answer:- Option-C
Question62:-For a square cut polyester staple fibre, length uniformity index is

Correct Answer:- Option-D
Question63:-INSTRON® tensile tester works on’ INSTRON*(o.)*
A:-CRL principle
B:-CRE principle
C:-CRT principle
D:-CRS principle
Correct Answer:- Option-B
Question64:-As the time to beak increases
A:-Yarn strength decreases
B:-Yarn strength increase
C:-Yarn strength does not change
D:-Yarn strength first decreases and then increases
Correct Answer:- Option-A
Question65:-Most suitable test for parachute fabric is
A:-Tensile strip strength
B:-Bursting strength
C:-Tearing strength
D:-Tensile grab strength
Correct Answer:- Option-B

Question66:-Three verities of cotton fibres of 4.5, 5 and 4.0 micronaire values are blended in weight proportions of 30%,
20% and 50%, respectively. The average micronaire value of mixing is

D:-4.34
Correct Answer:- Option-A