Which country is the world's largest producer of wool in the world?

Australia is the highest wool producing country in the world. It is responsible for the production of 25% of the world's wool.

The female silk moth lays eggs, from which hatch larvae which are called caterpillars or silkworms.

Selective breeding is a process of

When certain desired traits (properties) of parents are considered before breeding, it is called selective breeding.

Which is the world's best-known textile fibre brand?

The Wool mark certification trademark is one of the world's best-known textile fibre quality brands, providing consumers with guaranteed fibre content and an assurance of quality.

Certain breeds of sheep have thick coat of hair which is famous for

For obtaining wool, sheep are reared. Their hair is cut and processed into wool. The quality and texture of the fibres obtained from them. Certain breeds of sheep have thick coat of hair on their body which yields good quality wool in large quantities.

Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. Which of the following would be the right gift for her to buy?

Rest of the option given here are obtained by killing animals, but wool is produced from shearing of skin of sheep.

Paheli wants to know the name of the breed which is famous for good quality of wool?

There are some famous breeds of sheep which found in India. Such as, Lohi is famous for “Good quality of wool”. Marwadi is famous for “Coarse wool”. Nali is famous for “Carpet wool” and pathanwadi is famous for “Hosiery”.

Which country is the second largest producer of silk in the world?

India is the second largest producer of silk in the world after China. Silk Industry provides employment to 7.9 million people in India. China is the world's single biggest producer and chief supplier of silk to the world markets. India is the world's second largest producer. About 97% of the raw mulberry silk comes from some Indian states.

The general process that takes place at a sheep shearing shade is

Removal of fleece is called sheep shearing, separating hair of different textures is called shorting, washing wool to remove grease is called scouring and rolling of sheep fibre into yarn is called rolling.

Paheli wants to know the name of wool producing countries in the world? Would you help her?

The best wool producing countries are Australia, New Zealand, South Africa, China and Argentina. Australia is the world's largest producer of wool and contributes 25% of total world supply.

What do you mean by “Raw silk”?

After brushing, filaments from four to eight cocoons are joined and twisted. About 48 such twisted filament are joined to make a thread that is wound on a real. This is called “raw silk”.

Silk fibre is obtained from

Cocoon is one of the stages of life cycle of silkworm. Fleece of sheep gives wool, cotton ball gives cotton and jute stalk gives jute fibre.

Which of the following breeds of sheep is or are found only in Uttar Pradesh and Himachal Pradesh?

Rampur Bushair is the only breeds of sheep is found only in Uttar Pradesh and Himachal Pradesh. And rest of others, found in different part of the countries.

The term sericulture is used for

Sericulture is the rearing of silkworm to obtain silk fibre. Sericulture means “Silk farming”.

Paheli wants to know the name of wool producing countries in the world?

The best wool producing countries are Australia, New Zealand, South Africa, China and Argentina. Australia is the world's largest producer of wool and contributes 25% of total world supply.

Wool fibre cannot be obtained from which of the following?

Moth is an insect while other three are the animals with fur which produce wool.

Selective breeding is a process of

When certain desired traits (properties) of parents are considered before breeding, it is called selective breeding.

The rearing of silkworms for obtaining silk is called

Sericulture is a practice of rearing of silkworms for obtaining silk while silviculture is a practice of developing and caring forests.

Paheli wants to know the name of the wool producing states in India?

The woolen industry in India is small and is located in the states of Jammu and Kashmir, Himachal Pradesh, Arunachal Pradesh, Uttarakhand, Sikkim, Haryana, Punjab, Rajasthan and Gujarat.

Paheli and Boojho argued about the different words. Choose which of the statement is or are incorrect?

Apiculture is the scientific method of rearing of honeybees. All the rest are correct. Hence, your answer will be option [C].

Paheli wants to know, what the maximum length of continuous silk thread that can be obtained from a cocoon?

The maximum length of continuous silk that can be obtained from a cocoon is measured at 900 metres. This is the highest observed, however the length may vary in most cases as different cocoons are of different size and shape therefore having varied amount of silk within them.

Boojho wants to know why caterpillars need to shed their skin but we humans do not?

Caterpillar must shed their skin in order to grow, unlike us insects have an exo-skeleton which means that they are pretty much “encased” inside their skin. The skin does not grow with the animals. Caterpillars shed their skin three to five times while the grow. And this process is called “molting”. There is skin never grow as skin of human does. So, while growing they have to crawl out of their skin when their skin becomes too tight. Each skin is called an “instar”.

Reeling of silk is the process of taking out threads from the cocoon for use as silk.

Boojho wants to know the wool producing states in India, from the given options?

The woolen industry in India is small and is located in the states of Jammu and Kashmir, Himachal Pradesh, Arunachal Pradesh, Uttarakhand, Sikkim, Haryana, Punjab, Rajasthan and Gujarat.

Paheli wants to know that generally in which situation bleaching and dyeing of silk fibres (adding colours) are usually done?

Generally, bleaching and dyeing of silk fibres (adding colours) are usually done, before the yarns are made into fibres.

Boojho wants to know the name of the wool producing states in India?

The woolen industry in India is small and is located in the states of Jammu and Kashmir, Himachal Pradesh, Arunachal Pradesh, Uttarakhand, Sikkim, Haryana, Punjab, Rajasthan and Gujarat.

Class 7 Science Chapter 3 MCQ

Class 7 Science Chapter 3 MCQ (Multiple Choice Questions) of Fibre to Fabric. There are about 20 sets of MCQ tests, each test containing 5 questions with answers and explanation of answers updated for new academy session 2020-21.

These questions are design in such a way, it covers all the important questions, intext questions and keywords of the chapter 3 of class 7 Science.

Class 7 Science Chapter 3 MCQ for 2020-21

Class:	7
Subject:	Science
Contents:	Multiple Choice Questions – MCQ Tests

Class 7 Science Chapter 3 MCQ Tests

Class 7 Science Chapter 3 MCQ tests with answers and explanation are given below. It provides the complete revision for 7th Science Chapter 3. Every time starts a new test, when you click the button Start a New Test. After attempting 3 or 4 tests out of these 20 tests, you will feel confident about this chapter. It will also help in solving doubts related to Chapter 3 of grade 7 Science.

What happened when wool fibre is burn

[A]. It produces a sizzling noise

[B]. It smells like burning hair

[C]. It curls away from the flame

[D]. All the above

View Answer

Which of the following statement is or are incorrect?

[A]. Rearing and breeding of sheep can cause disease.

[B]. Scientific name of Mulberry is “Morus Alba”.

[C]. Reeling of silk is a process of making silk reels from fibres.

[D]. All the above.

Read the following statements carefully and choose the incorrect sentence(s)?

[A]. Can we say that cotton fibre is form of carbohydrate.

[B]. Can we say that silk fibre is a form of protein.

[C]. Can we say that jute fibre is a form of fat.

[D]. Can we say that wool fibre is a form of protein.

View Answer

Which of the following is not a type of silk?

[A]. Mulberry Silk

[B]. Tassar Silk

[C]. Mooga Silk

[D]. Moth Silk

Read the following statement about wool yielding animals and choose the incorrect sentence.

[A]. Angora wool is used to make woolen carpet.

[B]. Camel wool is used to make baby blanket.

[C]. Sheep wool is used to make push-mina shawl.

[D]. All the above.

View Answer

Start a New Test

What is the name of silkworms?

Silk is also natural animal fibre, obtained from the silkworms named Bombyx Mori.

What is Sericulture?

The practice of rearing silkworms to produce silk is called Sericulture.

What are the common helth problems from which workers suffering in Sericulture industry?

Respiratory disorders, Asthma, scabies, blisters and skin infections are some of the common health problems that workers working in sericulture industry suffer from.

What do you know about Reeling?

The process of collecting of silk thread from cocoons is Reeling.

Uses of Silk

In the manufacture of clothing, dress materials, curtains and upholstery.
For handicrafts and items like parachutes, bicycle tyres, comforter filling and artillery gunpowder bags.
Through a special manufacturing process, it is made suitable for use as nonabsorbable surgical sutures.
Doctors also use it to make prosthetic arteries.
As a material to write on.

Download NCERT Books and Offline Apps 2020-21 based on new CBSE Syllabus. Ask your doubts related to NIOS or CBSE Board and share your knowledge with your friends and other users through Discussion Forum.

« Class 7 Science Chapter 2 MCQ

Class 7 Science Chapter 4 MCQ »

Class 7 Science Chapter 3 MCQ

Class 7 Science Chapter 3 MCQ for 2020-21

Class 7 Science Chapter 3 MCQ Tests

What happened when wool fibre is burn

Which of the following statement is or are incorrect?

Read the following statements carefully and choose the incorrect sentence(s)?

Which of the following is not a type of silk?

Read the following statement about wool yielding animals and choose the incorrect sentence.

What is the name of silkworms?

What is Sericulture?

What are the common helth problems from which workers suffering in Sericulture industry?

What do you know about Reeling?

Uses of Silk

High School

Quick Links

Help & Support

Class 7 Science Chapter 3 MCQ

Class 7 Science Chapter 3 MCQ for 2020-21

Class 7 Science Chapter 3 MCQ Tests

What happened when wool fibre is burn

Which of the following statement is or are incorrect?

Read the following statements carefully and choose the incorrect sentence(s)?

Which of the following is not a type of silk?

Read the following statement about wool yielding animals and choose the incorrect sentence.

What is the name of silkworms?

What is Sericulture?

What are the common helth problems from which workers suffering in Sericulture industry?

What do you know about Reeling?

Uses of Silk

NCERT Solutions

High School

Quick Links

Help & Support