A:-Cotton
B:-Polyester
C:-Nylon
D:-Viscose
B:-Polyester
C:-Nylon
D:-Viscose
Correct Answer:- Option-C
2:-Which of the following fibres has excellent crease resistant?
A:-Cotton
B:-Polyster
C:-Nylon
D:-Viscose
B:-Polyster
C:-Nylon
D:-Viscose
Correct Answer:- Option-B
3:-Birefringence of a fibre is the measure of
A:-Dynamic modulus
B:-Density
C:-Orientation
D:-Crystallinity
B:-Density
C:-Orientation
D:-Crystallinity
Correct Answer:- Option-C
4:-The presence of functional groups in a fibre can be best determined by
A:-IR spectroscopy
B:-NMR spectroscopy
C:-Differential scanning calorimeter
D:-X-ray spectroscopy
B:-NMR spectroscopy
C:-Differential scanning calorimeter
D:-X-ray spectroscopy
Correct Answer:- Option-A
5:-Analysis of fiber structure by means of diffraction of electromagnetic waves is more compatible with x-rays than with ordinary visible light because
A:-X-rays has higher energy than ordinary light
B:-X-rays has wave lengths smaller than ordinary light
C:-It is easy to get picture or photographs with x-rays
D:-Wave lengths are comparable with crystallite sizes of fibre
B:-X-rays has wave lengths smaller than ordinary light
C:-It is easy to get picture or photographs with x-rays
D:-Wave lengths are comparable with crystallite sizes of fibre
Correct Answer:- Option-D
6:-Electromagnetic waves used in NMR spectroscopy is
A:-Ultra-violet rays
B:-Radio waves
C:-Gamma rays
D:-Infra-red rays
B:-Radio waves
C:-Gamma rays
D:-Infra-red rays
Correct Answer:- Option-B
7:-The helix reversal is found in
A:-Jute
B:-Wool
C:-Silk
D:-Cotton
B:-Wool
C:-Silk
D:-Cotton
Correct Answer:- Option-D
8:-If initial modulus and moment of inertia of a fibre are denoted by E and I, respectively, the bending rigidity of the fibre is expressed as
A:-E/I
B:-I/E
C:-EI²
D:-EI
B:-I/E
C:-EI²
D:-EI
Correct Answer:- Option-D
9:-Which one of the following statements is wrong?
A:-The density is same for both cotton and viscose
B:-The degree of polymerization is same for both cotton and viscose
C:-Both cotton and viscose are hydrophilic fibres
D:-Both cotton and viscose are the cellulosic fibres
B:-The degree of polymerization is same for both cotton and viscose
C:-Both cotton and viscose are hydrophilic fibres
D:-Both cotton and viscose are the cellulosic fibres
Correct Answer:- Option-B
10:-Which one of the following statements is correct with respect to a textile fibre?
A:-It is transversely isotropic
B:-The primary bond strength is weaker than secondary bond.
C:-Essentially it is made of short chain molecules.
D:-It is having very high density.
B:-The primary bond strength is weaker than secondary bond.
C:-Essentially it is made of short chain molecules.
D:-It is having very high density.
Correct Answer:- Option-A
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