197 + Mcqs in Textile Fibres and their Characteristics Page 2 McqOptions

51.	Evidence of fibre structure is based on
A.	chemistry of fibre
B.	optical properties
C.	physical properties
D.	all of above
Answer» E.

Discussion

52.	Length /width ratio ranges from infinity for
A.	long fibrils
B.	short fibrils
C.	very long fibrils
D.	moderate fibrils
Answer» D. moderate fibrils

Discussion

53.	Cotton is totally crystalline with disorder between fibrils coming from
A.	imperfect register
B.	perfect register
C.	same matrix
D.	different matrix
Answer» B. perfect register

Discussion

54.	Mean value of some correlation function relating position of neighboring chains is called as
A.	degree of order
B.	degree of crystallization
C.	degree of uniformity
D.	degree of normality
Answer» B. degree of crystallization

Discussion

55.	Parameter/s that specify fibre structure is/are
A.	degree of order and localization order
B.	length/width ratid of localized units
C.	degree of orientation and molecular extent
D.	all of above
Answer» E.

Discussion

56.	In graphite, carbon atoms are joined together in
A.	single planes
B.	2 dimensional plane
C.	3 dimensional plane
D.	4 dimensional plane
Answer» B. 2 dimensional plane

Discussion

57.	Measure of spread of values of degree of order taken over zones a few molecules wide is called as
A.	degree of order
B.	degree of localization
C.	degree of localization of order
D.	degree of normalization
Answer» D. degree of normalization

Discussion

58.	Value of X-ray diffraction in cotton is calculated to be
A.	27
B.	65
C.	40
D.	49
Answer» B. 65

Discussion

59.	A second generation of high performance fibers are mostly
A.	inorganic networks
B.	linear polymer fibers
C.	multi dimensional polymer fibers
D.	both a and b
Answer» E.

Discussion

60.	Arrangement of bonds and their strength determines the
A.	physical properties
B.	chemical properties
C.	bonding
D.	bond strength
Answer» B. chemical properties

Discussion

61.	Fibers as well as sheets and blocks of same polymer donot have
A.	microscopic form of crystal
B.	macroscopic form of crystal
C.	bioscopic form of crystal
D.	spectroscopic form of crystal
Answer» C. bioscopic form of crystal

Discussion

62.	Iodine sorption"s value in wood pulp is calculated to be
A.	52
B.	27
C.	13
D.	32
Answer» C. 13

Discussion

63.	Weak forces between each molecule of material is called as
A.	valency bonds
B.	van der Waals forces
C.	bonding
D.	binding
Answer» C. bonding

Discussion

64.	Two or three atoms held together with strong bonds are called as
A.	valency bonds
B.	weak bond
C.	strong atom
D.	strong bond
Answer» B. weak bond

Discussion

65.	Percentage accessibility of sulphite pulp measured by exchange of hydroxyl hydrogens for deutrium is
A.	87
B.	44
C.	57
D.	66
Answer» D. 66

Discussion

66.	Value of degree of order ranges to unity for
A.	crystalline fibre
B.	non crystalline fibre
C.	tight fibre
D.	amorphous fibre
Answer» B. non crystalline fibre

Discussion

67.	Material can be gas even if molecules are composed of two or three atoms only when force between individual molecule is
A.	strong
B.	weak
C.	negligible
D.	variable
Answer» C. negligible

Discussion

68.	Example/s of inorganic networks constituting fineness and flexibility is/are
A.	glass
B.	asbestos and glass
C.	glass and plastic
D.	plastic
Answer» C. glass and plastic

Discussion

69.	Diamond is made up of atoms linked together with
A.	van der Waal forces
B.	valency bonds
C.	weak bonds
D.	light forces
Answer» C. weak bonds

Discussion

70.	When a structure consists of blocks within a matrix, a crystallinity of 50% needs that spacings between crystallites averages
A.	1/4 of crystalline dimensions
B.	1/3 of crystalline dimensions
C.	2/3 of crystalline dimensions
D.	2/4 of crystalline dimensions
Answer» C. 2/3 of crystalline dimensions

Discussion

71.	Polymers that are used for most fibers seems likely to have a driving force towards
A.	order localization
B.	disoriented order
C.	oriented order
D.	non localized order
Answer» B. disoriented order

Discussion

72.	Value of hailwood horrobin in mercerized cotton is calculated to be
A.	45
B.	33
C.	50
D.	65
Answer» D. 65

Discussion

73.	Structure in which lattice parameters are subject to a more or less random distribution is called as
A.	crystalline structure
B.	paracrystalline structure
C.	random structure
D.	ordered structure
Answer» C. random structure

Discussion

74.	Large crystals have
A.	more energy
B.	less energy
C.	zero energy
D.	negligible energy
Answer» C. zero energy

Discussion

75.	Sometimes structure of paracrystal becomes so disordered that it is referred to as
A.	broken
B.	amorphous
C.	halo
D.	powdered
Answer» C. halo

Discussion

76.	In diamond all atoms are combined with valency bonds and in a
A.	one dimensional network
B.	2D network
C.	3D network
D.	4D network
Answer» D. 4D network

Discussion

77.	Type of spherulitic structure that may occur in nylon is
A.	streamed spherulitic
B.	narrow spherulitic
C.	odd spherulitic
D.	occluded spherulitic
Answer» E.

Discussion

78.	Sharp spots in four point diagram indicates that fibers consists of
A.	partially oriented polymers
B.	partially crystalline polymers
C.	linear polymers
D.	all of above
Answer» E.

Discussion

79.	Molecular extent in highly folded forms approximates to
A.	fold length
B.	fold width
C.	folds
D.	folding density
Answer» B. fold width

Discussion

80.	Difference between fine and coarse texture gives rise to
A.	size of localized units
B.	size of lamella
C.	size of cubic units
D.	size of micelles
Answer» B. size of lamella

Discussion

81.	Rearrangement/s that can be made without much change in overall degree of order is/are
A.	increase in size of crystalline region
B.	pushing out of defects
C.	mechanical deformation
D.	all of above
Answer» E.

Discussion

82.	In a continuous structure, whole material is of
A.	same degree
B.	different degree
C.	constant degree
D.	variable degree
Answer» B. different degree

Discussion

83.	Also in 1930, structure was regarded by some people as
A.	haphazardly ordered
B.	uniformly partly ordered
C.	fully ordered
D.	randomly ordered
Answer» C. fully ordered

Discussion

84.	Length /width ratio ranges to zero for
A.	short fibrils
B.	moderate fibrils
C.	cubic micelles
D.	extensive flat sheets
Answer» E.

Discussion

85.	Natural polymers are
A.	cellulose
B.	cellulose and protein
C.	polyamide
D.	polyester and protein
Answer» C. polyamide

Discussion

86.	Alcoholysis's value in mercerized cotton is calculated to be
A.	30
B.	15
C.	10
D.	25
Answer» E.

Discussion

87.	If flexibility is in main chain covalent bonds and weak bonding between long chain molecules, then thermal energy can cause chain to take up a
A.	disordered arrangement
B.	tangled arrangement
C.	random arrangement
D.	all of above
Answer» E.

Discussion

88.	If molecules are heavy and attractive forces are strong then material would be
A.	solid
B.	liquid
C.	gas
D.	both a and b
Answer» E.

Discussion

89.	Elastomeric fibers require
A.	low stretch
B.	high stretch
C.	negligible stretch
D.	variable stretch
Answer» C. negligible stretch

Discussion

90.	Diffraction evidence that structure is a mixture of order and disorder is supported by values of
A.	density
B.	moisture uptake
C.	analytical techniques
D.	all of above
Answer» E.

Discussion

91.	Hydrogen bond in water are strong enough to hold molecules as a crystalline solid at
A.	10 degrees
B.	below 0 degree
C.	above 0 degree
D.	100 degrees
Answer» C. above 0 degree

Discussion

92.	Cotton linter's percentage accessibility measured by exchange of hydroxyl hydrogens for deutrium is
A.	50
B.	78
C.	53
D.	99
Answer» B. 78

Discussion

93.	Length /width ratio ranges to unity for
A.	cubic micelles
B.	extensive flat sheets
C.	moderate fibrils
D.	short fibrils
Answer» B. extensive flat sheets

Discussion

94.	In polymers, annealing requires small crystals to melt down and
A.	reform as larger crystals
B.	reform as smaller crystals
C.	reform as bond
D.	reform as molecule
Answer» B. reform as smaller crystals

Discussion

95.	Percentage accessibility of mercerised sulphite pulp measured by exchange of hydroxyl hydrogens for deutrium is
A.	70
B.	49
C.	48
D.	50
Answer» B. 49

Discussion

96.	Large extension of any material is
A.	reversible
B.	irreversible
C.	weak
D.	strong
Answer» B. irreversible

Discussion

97.	Characteristic dimensions of fibers are basis of their
A.	use
B.	bonding
C.	properties
D.	strength
Answer» B. bonding

Discussion

98.	In woolen fabrics, fancy effects can be obtained in
A.	weaving
B.	spinning
C.	dyeing
D.	all of above
Answer» C. dyeing

Discussion

99.	Needles on cylinders can be
A.	inclined
B.	curved with a hook
C.	saw tooth shaped
D.	all of above
Answer» E.

Discussion

100.	In post carding lap drawing frame, fiber web leaving each single card is deviated by an angle of
A.	10 degrees
B.	35 degrees
C.	45 degrees
D.	90 degrees
Answer» E.

Discussion

Explore topic-wise MCQs in Textile Engineering.

Evidence of fibre structure is based on

Length /width ratio ranges from infinity for

Cotton is totally crystalline with disorder between fibrils coming from

Mean value of some correlation function relating position of neighboring chains is called as

Parameter/s that specify fibre structure is/are

In graphite, carbon atoms are joined together in

Measure of spread of values of degree of order taken over zones a few molecules wide is called as

Value of X-ray diffraction in cotton is calculated to be

A second generation of high performance fibers are mostly

Arrangement of bonds and their strength determines the

Fibers as well as sheets and blocks of same polymer donot have

Iodine sorption"s value in wood pulp is calculated to be

Weak forces between each molecule of material is called as

Two or three atoms held together with strong bonds are called as

Percentage accessibility of sulphite pulp measured by exchange of hydroxyl hydrogens for deutrium is

Value of degree of order ranges to unity for

Material can be gas even if molecules are composed of two or three atoms only when force between individual molecule is

Example/s of inorganic networks constituting fineness and flexibility is/are

Diamond is made up of atoms linked together with

When a structure consists of blocks within a matrix, a crystallinity of 50% needs that spacings between crystallites averages

Polymers that are used for most fibers seems likely to have a driving force towards

Value of hailwood horrobin in mercerized cotton is calculated to be

Structure in which lattice parameters are subject to a more or less random distribution is called as

Large crystals have

Sometimes structure of paracrystal becomes so disordered that it is referred to as

In diamond all atoms are combined with valency bonds and in a

Type of spherulitic structure that may occur in nylon is

Sharp spots in four point diagram indicates that fibers consists of

Molecular extent in highly folded forms approximates to

Difference between fine and coarse texture gives rise to

Rearrangement/s that can be made without much change in overall degree of order is/are

In a continuous structure, whole material is of

Also in 1930, structure was regarded by some people as

Length /width ratio ranges to zero for

Natural polymers are

Alcoholysis's value in mercerized cotton is calculated to be

If flexibility is in main chain covalent bonds and weak bonding between long chain molecules, then thermal energy can cause chain to take up a

If molecules are heavy and attractive forces are strong then material would be

Elastomeric fibers require

Diffraction evidence that structure is a mixture of order and disorder is supported by values of

Hydrogen bond in water are strong enough to hold molecules as a crystalline solid at

Cotton linter's percentage accessibility measured by exchange of hydroxyl hydrogens for deutrium is

Length /width ratio ranges to unity for

In polymers, annealing requires small crystals to melt down and

Percentage accessibility of mercerised sulphite pulp measured by exchange of hydroxyl hydrogens for deutrium is

Large extension of any material is

Characteristic dimensions of fibers are basis of their

In woolen fabrics, fancy effects can be obtained in

Needles on cylinders can be

In post carding lap drawing frame, fiber web leaving each single card is deviated by an angle of