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 2021-22.
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 2021-22
| 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
Selective breeding is a process of
[A]. Selecting the offspring with desired properties.
[B]. Selecting the parents with desired properties.
[C]. Selecting an area for breeding.
[D]. Selecting fine hair for good quality wool.
Q2
Which is the world’s best-known textile fibre brand?
[A]. Air Skin
[B]. Wide Plus Fabrics
[C]. Wool Dura
[D]. Wool Mark
Q3
The eggs of silkworm are stored in which of the following things?
[A]. Glass container or box
[B]. Stripe of clothes
[C]. Wooden box of Mulberry tree
[D]. Leather box
Q4
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
Q5
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
Q6
The general process that takes place at a sheep shearing shade is
[A]. Removal of fleece
[B]. Separating hair of different textures
[C]. Washing of sheep fibre to remove grease
[D]. Rolling of sheep fibre into yarn
Q7
Which of the following statement is or are incorrect?
[A]. Wool fibre is made up of proteins and silk fibre is also made up of proteins.
[B]. Mulberry Silk is the main variety of silk produced in India.
[C]. When wool fibres burnt, it gives sizzling noise, smell like burning hair and curl away from flame.
[D]. None of the above.
Q8
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.
Q9
“Boojho wants to know the name of silk producing state(s) in India”. Select the correct option.
[A]. Karnataka
[B]. Andhra Pradesh
[C]. Tamil Nadu
[D]. All the above.
Q10
Which of the following breeds of sheep is or are found only in Uttar Pradesh and Himachal Pradesh?
[A]. Patanwadi
[B]. Marwari
[C]. Bakharwal
[D]. Rampur Bushair
Q11
The term sericulture is used for
[A]. Culture of bacteria
[B]. Rearing of silkworm
[C]. Making silk fabric from silk yarn
[D]. Production of sarees
Q12
Paheli wants to know the name of wool producing countries in the world?
[A]. Australia
[B]. New Zealand
[C]. South Africa
[D]. All of the above
Q13
Wool fibre cannot be obtained from which of the following?
[A]. Goat
[B]. Llama
[C]. Alpaca
[D]. Moth
Q15
Selective breeding is a process of
[A]. Selecting the offspring with desired properties.
[B]. Selecting the parents with desired properties.
[C]. Selecting an area for breeding.
[D]. Selecting fine hair for good quality wool.
Q16
The rearing of silkworms for obtaining silk is called
[A]. Cocoon
[B]. Silk
[C]. Sericulture
[D]. Silviculture
Q17
Paheli wants to know the name of the wool producing states in India?
[A]. Arunachal Pradesh
[B]. Sikkim
[C]. Haryana
[D]. All the above
Q18
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.
Q19
Paheli wants to know, what the maximum length of continuous silk thread that can be obtained from a cocoon?
[A]. About 1 metre
[B]. About 9 metre
[C]. About 100 metre
[D]. About 900 metre
Q20
Boojho wants to know why caterpillars need to shed their skin but we humans do not?
[A]. When they take vitamin-D
[B]. When they grow bigger
[C]. When they are allowed to die
[D]. All the above.
Q21
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.
Q22
Reeling of silk is
[A]. A process of making silk reels
[B]. Spinning of silk fibres
[C]. Weaving of silk cloth
[D]. The process of taking silk threads from cocoon
Q23
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
Q24
Boojho wants to know the name of the wool producing states in India?
[A]. Punjab
[B]. Rajasthan
[C]. Gujarat
[D]. All the above
Q25
Which of the following statement is or are incorrect?
[A]. Silkworms are caterpillar of silk moth.
[B]. In India, sheep, camels and goats, yaks are generally reared for obtaining wool.
[C]. The wool yielding animals have a thick coat of hair which trap a lot of air.
[D]. The fine soft hair fibres are used for making wool.
Important Questions of 7th Science Chapter 3
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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