Careers360 Logo
NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric

NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric

Edited By Vishal kumar | Updated on Feb 16, 2024 05:59 PM IST

NCERT Solutions Class 7 Science Chapter 3 – Free PDF Download

NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric: Fibre that are obtained from plants like cotton, jute etc. are discussed in NCERT Solutions of class 6 . Fibres are also obtained from animals like sheep, yak etc. The NCERT solutions for Class 7 Science chapter 3 Fibre to Fabric have explanations for the questions related to wool which is obtained from sheep and silk which is obtained from silkmoth.

Class 7 Science chapter Fibre to Fabric explains the step-wise process of getting wool from sheep and silk from the cocoon. At the end of the chapter, exercise questions are given. The NCERT solutions for Class 7 Science Chapter 3 Fibre to Fabric discuss all these questions. The class 7 science chapter 3 question answer covers all the questions of the NCERT science chapters and is helpful for exam preparation for other Classes as well. The NCERT solutions for Class 7 Science chapter 3 Fibre to Fabric covers questions from all the topics of this chapter. Students are recommended to go through NCERT Solutions for Class 7 to score high marks in their examinations. Fibre to fabric class 7 NCERT solutions are also available in the form of PDF, so students can use them anytime anywhere without any charge.

**As per the CBSE Syllabus 2023-24, this chapter chapter was removed.

Free download class 7 science chapter 3 question answer PDF for CBSE exam.

NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric

Download PDF

NCERT Solutions for Class 7 Science Chapter 2: Solved Exercise Questions

1. You must be familiar with the following nursery rhyme:

(i) ‘Baa baa black sheep, have you any wool.’

Answer the following:

(a) Which parts of the black sheep have wool?

Answer:

(a) Black sheep have wool in the skin part.

1. You must be familiar with the following nursery rhymes:

(ii) ‘Mary had a little lamb, whose fleece was white as snow.’

Answer the following:

(b) What is meant by the white fleece of the lamb?

Answer:

(b) White fleece means the hair (from where the wool is obtained) of lamb.

2. The silkworm is (a) a caterpillar, (b) a larva.

Choose the correct option.

(i) a

(ii) b

(iii) both a and b

(iv) neither a nor b.

Answer:

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

Hence correct option: (iii) both a and b

3. Which of the following does not yield wool?

(i) Yak

(ii) Camel

(iii) Goat

(iv) Woolly dog

Answer:

(iv) Woolly dog does not yield wool.

4. What is meant by the following terms?

(i) Rearing

Answer:

Rearing means helping animals to grow includes grazing, feeding or breeding for some profit or other pleasure. It also helps animals from the problems of itching, odour, and waste.

4. What is meant by the following terms?

(ii) Shearing

Answer:

The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called shearing.

4. What is meant by the following terms?

(iii) Sericulture

Answer:

The rearing of silkworms for obtaining the spinned silk is called sericulture.


5. Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them.

Shearing, __________, sorting, __________, __________, _________.

Answer:

The complete steps for the processing of the wool.

Shearing, scouring , sorting, cleaning of burrs , dyeing , rolling .

6. Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.

Answer:

The two stages in the life history of the silk moth which are directly related to the production of silk are:

Silkworm and cocoon

1653596276876 1653596297244


7. Out of the following, which are the two terms related to silk production?

Sericulture, floriculture, moriculture, apiculture and silviculture.

Hints: (i) Silk production involves cultivation of mulberry leaves and rearing silkworms.

(ii) Scientific name of mulberry is Morus alba.

Answer:

Sericulture and moriculture are related to silk production.

Sericulture: Rearing of silkworms to obtain silk.

Moriculture: The science of cultivation of mulberry leaves for silk production.

Therefore, the silk industry is dependent on sericulture which in turn is dependent on moriculture. Hence, both are related to silk production.


8. Match the words of Column 1 with those given in Column 2:

Column 1 Column 2

1. Scouring (a) Yields silk fibres

2. Mulberry leaves (b) Wool yielding animal

3. Yak (c) Food of silk worm

4. Cocoon (d) Reeling

(e) Cleaning sheared skin

Answer:

Column 1 Column 2
1. Scouring (e) Cleaning sheared skin
2. Mulberry leaves (c) Food of silk worm
3. Yak (b) Wool yielding animal
4. Cocoon (a) Yields silk fibres


9. Given below is a crossword puzzle based on this lesson. Use hints to fill in the blank spaces with letters that complete the words.

Down Across

(D) 1: Thorough washing (A) 1: Keeps warm

2: Animal fibre 2: Its leaves are eaten by silkworms

3: Long thread like structure 3: Hatches from egg of moth.

1653596342185


Answer:

Down Across
1. SCOUR 1. WOOL
2. SILK 2. MULBERRY
3. FIBRE 3. CATERPILLAR


Don't be discouraged if you're having difficulty understanding the class 7 science chapter 3 ncert solutions presented above. Consider rereading your NCERT textbook and thoroughly understanding the concepts of each chapter's topics. Answer these questions independently, based on your improved comprehension. Compare your answers to the fibre to fabric class 7 questions and answers. You'll notice that your knowledge and clarity of these ideas will increase dramatically, allowing you to communicate your answers more effectively.

Chapter-wise NCERT Solutions of Class 7 Science

In addition to the Class 7 Science ch 3 question answer, students can access comprehensive chapter-wise solutions for Class 7 Science by clicking the link provided below:

Fibre to Fabric Class 7 Science Chapter 3-Topics

Topics for science chapter 3 class 7 are listed below:

  • Wool
  • Animals that yield wool
  • From fibres to wool
  • Processing fibres into wool
  • Life history of Silkmoth
  • Silk

NCERT Solutions for Class 7 Subject Wise

Benefits of NCERT solutions for Class 7 Science chapter 3 Fibre to Fabric:

  • Solving homework questions are easy with the NCERT solutions for Class 7 Science Chapter 3 Fibre to Fabric in hand.
  • Going through the NCERT solutions of C lass 7 Science chapter 3 Fibre to Fabric give clarity of the concepts studied in the chapter.

key Features of Fibre to Fabric Class 7 NCERT Solutions

  1. Comprehensive Coverage: The fibre to fabric class 7 solutions cover all the topics and questions from the chapter "Fibre to Fabric" in the Class 7 Science NCERT textbook.

  2. Detailed Explanations: The class 7 science chapter 3 question answer provide step-by-step explanations for each question, making it easy for students to understand and learn.

  3. Exam-Oriented: The class 7 science chapter 3 ncert solutions include different types of questions, including objective, short, and long answer questions, to help students prepare for exams effectively.

  4. Concept Clarity: By going through these class 7 fibre to fabric ncert solutions, students can gain a better understanding of the concepts related to the production of fabrics from natural and synthetic fibers.

  5. Self-Assessment: Students can use these fibre to fabric class 7 questions and answers to self-assess their knowledge and improve their problem-solving skills.

  6. Free PDF Download: The class 7 science ch 3 question answer are available for free in PDF format, allowing students to access them offline and at their convenience.

Also Check NCERT Books and NCERT Syllabus here

Frequently Asked Questions (FAQs)

1. Whether the Class 7 Science Chapter 3 Fibre to Fabric is useful in higher studies ?

Yes, this chapter is very important for higher studies in the field of science and technology

2. What are the topics covered in NCERT Class 7 Science chapter 3?

Here is the topics covered in NCERT Class 7 Science chapter3

  • Wool  
  •   Animals that yield wool  
  •   From fibres to wool  
  •   Processing fibres into wool  
  •   Life history of Silkmoth  
  •   Silk
3. How many questions in NCERT Class 7 Science Chapter3?

There are 9 questions in NCERT Class 7 chapter 3

Articles

Get answers from students and experts

A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1)

0.34\; J

Option 2)

0.16\; J

Option 3)

1.00\; J

Option 4)

0.67\; J

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times.  Assume that the potential energy lost each time he lowers the mass is dissipated.  How much fat will he use up considering the work done only when the weight is lifted up ?  Fat supplies 3.8×107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.  Take g = 9.8 ms−2 :

Option 1)

2.45×10−3 kg

Option 2)

 6.45×10−3 kg

Option 3)

 9.89×10−3 kg

Option 4)

12.89×10−3 kg

 

An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1)

2,000 \; J - 5,000\; J

Option 2)

200 \, \, J - 500 \, \, J

Option 3)

2\times 10^{5}J-3\times 10^{5}J

Option 4)

20,000 \, \, J - 50,000 \, \, J

A particle is projected at 600   to the horizontal with a kinetic energy K. The kinetic energy at the highest point

Option 1)

K/2\,

Option 2)

\; K\;

Option 3)

zero\;

Option 4)

K/4

In the reaction,

2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}

Option 1)

11.2\, L\, H_{2(g)}  at STP  is produced for every mole HCL_{(aq)}  consumed

Option 2)

6L\, HCl_{(aq)}  is consumed for ever 3L\, H_{2(g)}      produced

Option 3)

33.6 L\, H_{2(g)} is produced regardless of temperature and pressure for every mole Al that reacts

Option 4)

67.2\, L\, H_{2(g)} at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, Mg_{3}(PO_{4})_{2} will contain 0.25 mole of oxygen atoms?

Option 1)

0.02

Option 2)

3.125 × 10-2

Option 3)

1.25 × 10-2

Option 4)

2.5 × 10-2

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1)

decrease twice

Option 2)

increase two fold

Option 3)

remain unchanged

Option 4)

be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

Option 1)

Molality

Option 2)

Weight fraction of solute

Option 3)

Fraction of solute present in water

Option 4)

Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol-1) is

Option 1)

twice that in 60 g carbon

Option 2)

6.023 × 1022

Option 3)

half that in 8 g He

Option 4)

558.5 × 6.023 × 1023

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t2) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m2 , the number of rotations made by the pulley before its direction of motion if reversed, is

Option 1)

less than 3

Option 2)

more than 3 but less than 6

Option 3)

more than 6 but less than 9

Option 4)

more than 9

Back to top