Fibre to Fabric Test

Result

Fibre to Fabric Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements about processing of wool is/are correct?

I. Suint and grease in the wool are called yolk.
II. Woolsorter's disease is a viral infection.
III. Spinning of wool is followed by carding.

A
Only I

B
Only II

C
Only I and II

D
Only I and III

Solution

Statement I is correct as suint and grease form yolk, which is removed by scouring the wool.
Woolsorter's disease is a bacterial infection. Hence, the statement II is incorrect.
Spinning of wool fibres is done after carding. Hence, the statement III is incorrect.

Question 2

1 / -0

In the table given below, match the fibres in column I with the burning test given by them in column II:

Fibre	Burning Behaviour
(i) Cotton	(a) Does not burn, melts, white hard bead, smells of celery
(ii) Wool	(b) Does not burn, rotten smell
(iii) Silk	(c) Burns with a continuous flame, smell of burning paper
(iv) Nylon	(d) Burns, no melting, black char
(v) Polyester	(e) Does not burn, melts, white hard bead, burns with fruity smell.
(vi) Acrylic	(f) Does not burn, smell of burning hair, black char

(i) - f, (ii) - c, (iii) - b, (iv) - a, (v) - e, (vi) - d

(i) - c, (ii) - f, (iii) - b, (iv) - a, (v) - e, (vi) - d

(i) - c, (ii) - f, (iii) - a, (iv) - b, (v) - e, (vi) - d

(i) - c, (ii) - f, (iii) - b, (iv) - a, (v) - d, (vi) - e

Solution

Correct Answer: (i) - c, (ii) - f, (iii) - b, (iv) - a, (v) - e, (vi) - d

Question 3
1 / -0

Observe the following Venn diagram.

Identify the option that best represents 'P'.

A
Cotton

B
Wool

C
Spandex

D
Silk

Solution

Silk is made up of fibroin protein, and is elastic and lustrous.
Question 4
1 / -0

Observe the picture below showing the processing of a fibre.

Select from among the following, the correct statement(s) in context of the process:

I. The step is involved in processing of a plant fibre.
II. The fibre is obtained from the stem of the plant.
III. The process is carried out just prior to weaving of the fabric.

A
Only I

B
Only II

C
Only I and II

D
All I, II and III

Solution

The process shown is ginning of cotton to separate the fibre from the seeds.
This is one of the preliminary steps in the processing of cotton.
Cotton fibre is not obtained from the plant stem, but from the fruit.
Hence, only the statement I is correct.
Question 5
1 / -0

Given below is a list of commercial activities. Identify the one(s) that is/are related to silk production.

A. Sericulture
B. Silviculture
C. Horticulture
D. Moriculture

A
A only

B
A, B and D

C
A and D

D
A and B

Solution

A (Sericulture) is rearing of silkworms and D (Moriculture) is cultivation of mulberry.
Both are activities related to production of silk.
Question 6
1 / -0

Look at the sequence of activities taken up in the processing of wool.

Shearing, ____X_____, ____Y____, Carding, Spinning, Weaving

The missing steps X and Y, respectively, are:

A
Dyeing and Drying

B
Ginning and Sorting

C
Scouring and Ginning

D
Sorting and Scouring

Solution

The correct sequence of steps in the processing of wool is:
Shearing, Sorting, Scouring, Carding, Spinning, Weaving
Question 7
1 / -0

Which of the following varieties of sheep yields the finest quality of wool?

A
Merino

B
Patanwadi

C
Marwari

D
Lohi

Solution

Merino wool, taken from the Merino sheep, has a fine, soft appearance and is quite expensive.

Question 8

1 / -0

Directions: Observe the following Venn diagram and select the correct options representing W, X, Y and Z from the table that follows.

	W	X	Y	Z
(A)	Wool	Mulberry silk	Muga silk	Abestos
(B)	Mulberry silk	Muga silk	Abestos	Wool
(C)	Wool	Mulberry silk	Abestos	Muga silk
(D)	Mulberry silk	Wool	Muga silk	Abestos

(A)

(B)

(C)

(D)

Solution

Wool - W, Mulberry silk - X, Abestos - Y, Muga silk - Z
This is the correct option because all are natural fibres.
Wool is an animal fibre. Abestos is a mineral fibre. Muga and Mulberry, which are varieties of silk, are insect fibres.

Question 9

1 / -0

Directions: Match the breeds of the sheep (Column I) with the states in India where they are found (Column II).

Column I	Column II
(a) Patanwadi	(i) Jammu and Kashmir
(b) Bhakarwal	(ii) Himachal Pradesh and Uttar Pradesh
(c) Rampur Bushair	(iii) Punjab
(d) Lohi	(iv) Gujarat

(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)

(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

(a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)

(a) - (iii), (b) - (i), (c) - (ii), (d) - (iv)

Solution

The correct match is as follows.

Column I	Column II
(a) Patanwadi	(iv) Gujarat
(b) Bhakarwal	(i) Jammu and Kashmir
(c) Rampur Bushair	(ii) Himachal Pradesh and Uttar Pradesh
(d) Lohi	(iii) Punjab

Hence, (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii) is the correct match.

Question 10
1 / -0

Which of the following statements about scouring of wool is/are correct?

I. Suint is the dried perspiration of sheep and is water soluble.
II. Wool grease is also soluble in water.
III. Together, suint and wool grease are known as yolk.

A
I and III

B
I and II

C
I only

D
II only

Solution

Suint is the dried perspiration of the sheep and is water soluble.
Wool grease or wool wax is secreted by the sebaceous glands of wool-bearing animals.
It is also called lanolin and is not water soluble.
Together, suint and lanolin are called yolk.
Hence, the statements I and III are correct.
Question 11
1 / -0

Wool sorter's disease is caused by

A
Salmonella

B
Lactobacillus

C
E. coli

D
Bacillus anthracis

Solution

Wool sorter's disease is a bacterial infection caused by the bacterium Bacillus anthracis.
Question 12
1 / -0

Directions: Analyse the two statements given below and select the correct option.

Statement I: Woollen yarn is used to make carpets and worsted yarn is used to make fabric for suits.
Statement II: Worsted yarn is rough and irregular.

A
Both statements I and II are correct and II is the correct reason for I.

B
Both statements I and II are correct, but II is not the correct reason for I.

C
Statement I is correct, but statement II is incorrect.

D
Both statements I and II are incorrect.

Solution

The yarn for worsted fibre is finer, smoother, more even and more tightly twisted as compared to the woollen yarn.
Hence, worsted fabric insulates less than the woollen one, but holds crease better.
Hence, woollen yarn is used to make carpets and worsted yarn is used to make fabric for suits.
Therefore, statement I is correct, but statement II is incorrect.
Question 13
1 / -0

Which of the following is the correct sequence of wool extraction?

A
Scouring Shearing Dyeing Grading Drying

B
Scouring Grading Shearing Drying Dyeing

C
Shearing Scouring Grading Dyeing Drying

D
Shearing Grading Scouring Dyeing Drying

Solution

The correct sequence of activities taken up for the processing of wool is as follows.
Shearing (removal of the animal fleece) Scouring (washing of the wool fibre to remove the suint and grease) Grading (sorting of fibres on the basis of their length and quality) Dyeing (imparting desirable colour) Drying
Question 14
1 / -0

What is chrysalis?

A
Pupa stage in the life cycle of a moth

B
Fine filament of silk secreted by the moth

C
Stored eggs of silkworm over the winters

D
Adult stage in the life cycle of a moth

Solution

Chrysalis is the pupa stage in the life cycle of the insects that undergo metamorphosis.
Question 15
1 / -0

Directions: Observe the table below and select the correct option accordingly.

A
Terrycot - W, Tussar - X, Muga - Y, Rayon - Z

B
Terrycot - W, Terylene - X, Polyester - Y, Nylon - Z

C
Tussar - W, Muga - X, Eri - Y, Coan - Z

D
Rayon - W, Nylon - X, Spider - Y, Mussel - Z

Solution

Tussar, Muga, Eri and Coan are varieties of silk.
These are obtained from different varieties of silk moths.
The silkworms in each of these varieties feed on different leaves.
Question 16
1 / -0

Silkworms are raised to produce silk. Where did this practice originate over 5000 years ago?

A
America

B
Korea

C
China

D
England

Solution

Sericulture originated in China and for a long time, remained a monopoly of that country.
Question 17
1 / -0

Sericulture is the

A
production of cocoons for their raw silk filament

B
collection of cocoons to remove thread

C
twisting of silk thread into yarns

D
weaving of silk threads into fabric

Solution

Sericulture, or silk farming, is the cultivation of silkworms to produce silk. The fibre is obtained from the cocoon, hence option (1) is correct.
Question 18
1 / -0

Which of the following is/are name(s) used for rayon?

A
Artificial silk

B
Viscose rayon

C
Cellulosic fibre

D
All of the above

Solution

All of the above names are used for rayon.
It was the first semi-synthetic fibre made by the chemical processing of wood cellulose and has silk like properties.
Viscose rayon is the name given to rayon fibre that is produced by the treatment of cellulose xanthate.
Question 19
1 / -0

Which of the following statements are true?

A
Cotton pods are referred to as cotton bolls.

B
Fibre grows on the seed of the plant.

C
Fibre grows from the fruit wall.

D
Both (1) and (2) are correct.

Solution

The fruit of the cotton plant is in the form of green pods and are called cotton bolls.
A cotton boll is a segmented pod containing 32 immature seeds from which the cotton fibers grow.
Hence, both (1) and (2) are correct.
Therefore, the option (4) is correct.
Question 20
1 / -0

Which of the following gives us coir?

A
Jute

B
Flax

C
Cotton

D
Coconut

Solution

Coir is obtained from coconut.