NCERT Solutions for Class 7 Science Chapter 3: Fibre to Fabric

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NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric are provided in this article. The important topics that are included in this chapter are:

Wool
Silk

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NCERT Solutions for Class 7 Science Chapter 3

NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric are given below:

NCERT Solution

Class 7 Science Chapter 3 Fibre to Fabric: Important Topics

Fibres are thin, long, flexible, and hair or thread-like structures. The fibres are usually obtained from two main sources- Plants and Animals. These fibers are called Natural Fibres. Cotton, wool, and silk are examples of Natural Fibres.

Wool

Wool is referred to as the textile fibre obtained from sheep and other animals, which includes cashmere and mohair from goats, qiviut from muskoxen, hide and fur clothing from bison, angora from rabbits, and other types of wool from camelids.

Silk

Silk is a natural protein fibre, some forms of which can be woven into textiles. The protein fibre of silk is formed mainly of fibroin, which is produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity.

Chapter Related Links:

MCQs on fibre to fabric	MCQs on animal kingdom	Variety in Fabrics
Yarn to Fabric	History of Clothing Material	Animal Fibre
Silkworm	Spinning of cotton yarn	Synthetic Fibre
Fibrous Materials Uses	Jute	Plant Fibers

Class 7 Science Additional Resources:

CBSE Class 7 Science NCERT Textbook	CBSE Class 7 Science Sample Paper	NCERT Solutions

CBSE X Related Questions

1.
State two limitations of electrical impulses in multicellular organisms. Why is chemical communication better than electrical impulses as a means of communication between cells in multicellular organisms?
View Solution
2.
A Hydrocarbon which does not belong to the same homologous series of carbon compounds is:
- \( \text{C}_4\text{H}_{10} \)
- \( \text{C}_6\text{H}_{14} \)
- \( \text{C}_7\text{H}_{14} \)
- \( \text{C}_{10}\text{H}_{22} \)
View Solution
3.
Name the type of lenses required by the persons for the correction of their defect of vision called presbyopia. Write the structure of the lenses commonly used for the correction of this defect giving reason for such designs.
View Solution
4.
Draw a ray diagram to show the refraction of a ray of light passing through an equilateral glass prism. Mark the angle through which the emergent ray bends from the direction of the incident ray and also name it.
View Solution
5.
Show the formation of magnesium chloride by electron transfer. Write the name of the cation and anion present in the compound formed. (Atomic Number of Mg = 12, Cl = 17)
View Solution
6.
Express refractive index of Medium 2 with respect to Medium 1 in terms of speed of light in two media.
View Solution

View All

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NCERT Solutions for Class 7 Science Chapter 3: Fibre to Fabric

NCERT Solutions for Class 7 Science Chapter 3

Class 7 Science Chapter 3 Fibre to Fabric: Important Topics

Wool

Silk

CBSE X Related Questions

1.
State two limitations of electrical impulses in multicellular organisms. Why is chemical communication better than electrical impulses as a means of communication between cells in multicellular organisms?

2.
A Hydrocarbon which does not belong to the same homologous series of carbon compounds is:

3.
Name the type of lenses required by the persons for the correction of their defect of vision called presbyopia. Write the structure of the lenses commonly used for the correction of this defect giving reason for such designs.

4.
Draw a ray diagram to show the refraction of a ray of light passing through an equilateral glass prism. Mark the angle through which the emergent ray bends from the direction of the incident ray and also name it.

5.
Show the formation of magnesium chloride by electron transfer. Write the name of the cation and anion present in the compound formed. (Atomic Number of Mg = 12, Cl = 17)

6.
Express refractive index of Medium 2 with respect to Medium 1 in terms of speed of light in two media.

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NCERT Solutions for Class 7 Science Chapter 3: Fibre to Fabric

NCERT Solutions for Class 7 Science Chapter 3

Class 7 Science Chapter 3 Fibre to Fabric: Important Topics

Wool

Silk

CBSE X Related Questions

1.State two limitations of electrical impulses in multicellular organisms. Why is chemical communication better than electrical impulses as a means of communication between cells in multicellular organisms?

2.A Hydrocarbon which does not belong to the same homologous series of carbon compounds is:

3.Name the type of lenses required by the persons for the correction of their defect of vision called presbyopia. Write the structure of the lenses commonly used for the correction of this defect giving reason for such designs.

4.Draw a ray diagram to show the refraction of a ray of light passing through an equilateral glass prism. Mark the angle through which the emergent ray bends from the direction of the incident ray and also name it.

5.Show the formation of magnesium chloride by electron transfer. Write the name of the cation and anion present in the compound formed. (Atomic Number of Mg = 12, Cl = 17)

6.Express refractive index of Medium 2 with respect to Medium 1 in terms of speed of light in two media.

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
State two limitations of electrical impulses in multicellular organisms. Why is chemical communication better than electrical impulses as a means of communication between cells in multicellular organisms?

2.
A Hydrocarbon which does not belong to the same homologous series of carbon compounds is:

3.
Name the type of lenses required by the persons for the correction of their defect of vision called presbyopia. Write the structure of the lenses commonly used for the correction of this defect giving reason for such designs.

4.
Draw a ray diagram to show the refraction of a ray of light passing through an equilateral glass prism. Mark the angle through which the emergent ray bends from the direction of the incident ray and also name it.

5.
Show the formation of magnesium chloride by electron transfer. Write the name of the cation and anion present in the compound formed. (Atomic Number of Mg = 12, Cl = 17)

6.
Express refractive index of Medium 2 with respect to Medium 1 in terms of speed of light in two media.