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.

Q1

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

[A]. Good quality of wool
[B]. Coarse quality of wool
[C]. Hosiery articles covering
[D]. Milk giving animals
Q2

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

[A]. Lohi
[B]. Marwari
[C]. Nali
[D]. Patanwadi




Q3

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

[A]. Uruguay
[B]. China
[C]. Argentina
[D]. All the above.
Q4

What do you mean by “Raw silk”?

[A]. When the cocoons are kept under the sun or boiled or exposed to steam condition.
[B]. When caterpillar just completed cover (itself) by protein fibres.
[C]. When cocoons are dyed in beautiful colours after boiling process.
[D]. None of the above.




Q5

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.
Q6

Silkworms secrete fibre made of

[A]. Fat
[B]. Cellulose
[C]. Protein
[D]. Nylon
Q7

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

[A]. Mori-culture is the science of mulberry cultivation.
[B]. Floriculture is the science of the cultivation of flowers.
[C]. Apiculture is the scientific method of rearing of fishes.
[D]. None of the above.
Q8

Which of the following is not a type of silk?

[A]. Mulberry Silk
[B]. Tassar Silk
[C]. Mooga Silk
[D]. Moth Silk



Q9

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

[A]. Jammu and Kashmir
[B]. Himachal Pradesh
[C]. Uttarakhand
[D]. All the above
Q10

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

[A]. Before the yarns are made into fibres.
[B]. After the yarns are made.
[C]. Before the fabrics are made.
[D]. After the fabrics are made.



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.



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