Fibre to Fabric (CBSE Class-7 Science): Questions 8 - 14 of 17

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Question number: 8

» Fibre to Fabric » Fibre » Source of Fibre

MCQ▾

Question

Fibres are obtained from:

Choices

Choice (4) Response

a.

Plants

b.

Animals

c.

Synthesized using chemicals in a factory

d.

All a. , b. and c. are correct

Question number: 9

» Fibre to Fabric » Animal Fibres » Processing Fibres Into Wool

MCQ▾

Question

Coarser fibres are then twisted into rope like structures is called as:

Choices

Choice (4) Response

a.

Weaving

b.

Crabbing

c.

Roving

d.

All of the above

Question number: 10

» Fibre to Fabric » Silk » From Cocoon to Silk

MCQ▾

Question

Stages of filature operation are:

Choices

Choice (4) Response

a.

Filament, skeins

b.

Sorting of cocoons, reeling of filament, bailing

c.

Sorting of cocoons, softening the Sericin, reeling of filament bailing

d.

All of the above

Question number: 11

» Fibre to Fabric » Animal Fibres » From Fibres to Wool

MCQ▾

Question

What is Shearing?

Choices

Choice (4) Response

a.

Process of harvesting the wool

b.

The clean wool is passed through rollers

c.

Interlocks yarns into loops

d.

Interlocks pieces of yarn at right angles to one another

Question number: 12

» Fibre to Fabric » Animal Fibres » From Fibres to Wool

MCQ▾

Question

Clean wool is passed through roller, which is turn, straighten the fibres and removes unwanted matter is called as:

Choices

Choice (4) Response

a.

Spinning

b.

Carding

c.

Dyeing

d.

None of the above

Question number: 13

» Fibre to Fabric » Animal Fibres » Wool

MCQ▾

Question

Wool is widely used in clothing because:

Choices

Choice (4) Response

a.

Its fibres uncurl when stretched but return to their original state when released.

b.

Each fibre is covered with scales

c.

It resists creasing and crushing

d.

All a. , b. and c. are correct

Question number: 14

» Fibre to Fabric » Animal Fibres » From Fibres to Wool

MCQ▾

Question

Number of steps involved for obtaining wool from animals first and the foremost are the:

Choices

Choice (4) Response

a.

Rearing and breeding

b.

Breeding

c.

Shearing

d.

Rearing

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