Homework Practice

Printable assignment

Fibre to Fabric: Silk, Uses and Responsibility

Silkworms and Silk Processing

Question 1mcq

Which stage of the silk moth life cycle produces the cocoon used for silk?

A.Adult moth after laying eggs

B.Egg before hatching

C.Pupa inside the cocoon

D.Fully grown sheep

Question 2mcq

Why is the silkworm called the larva of the silk moth?

A.It is the adult moth after wings appear.

B.It is the cocoon after boiling.

C.It is the wool-bearing stage of sheep.

D.It is the young feeding stage that hatches from the egg.

Question 3mcq

What is reeling of silk?

A.Unwinding silk fibres from cocoons to make silk thread

B.Cutting fleece from sheep

C.Separating seeds from cotton

D.Making wool waterproof by dyeing

Question 4mcq

A silk producer heats cocoons in water before reeling. What is the purpose?

A.To convert silk into wool

B.To soften the gum and help unwind the silk filament

C.To grow a new silkworm instantly

D.To remove all colour from cotton

Question 5mcq

Which property makes silk suitable for decorative sarees and scarves?

A.It is rough and always dull.

B.It melts into salt water.

C.It is smooth and lustrous.

D.It is the thickest winter insulator among all fibres.

Properties, Safety and Choices

Question 6mcq

Why is wool generally preferred over silk for winter sweaters?

A.Silk cannot be woven at all.

B.Wool is obtained from cocoons.

C.Silk always conducts heat faster than metal.

D.Wool traps more air and provides better insulation.

Question 7mcq

Why should workers in wool sorting be protected from dust and germs in raw fleece?

A.Raw fleece may carry dust and microbes that can cause illness.

B.Raw fleece produces oxygen gas.

C.Wool sorting always creates silk moths.

D.Dust improves lung health.

Question 8mcq

Which concern is an ethical question in silk production?

A.Whether silk is shiny

B.Whether silkworms are killed when cocoons are boiled for silk

C.Whether cocoons are oval

D.Whether mulberry leaves are green

Question 9mcq

A student wants a soft, shiny fabric for a festive scarf, not mainly for warmth. Which choice best fits?

A.Coarse jute

B.Raw sheep fleece without processing

C.Silk

D.Thick woollen blanket

Question 10mcq

Assertion: Woollen clothes are useful in cold places. Reason: Wool fibres trap air, and trapped air reduces heat loss. Which option is correct?

A.Both are true, but the reason does not explain the assertion.

B.The assertion is true, but the reason is false.

C.The assertion is false, but the reason is true.

D.Both assertion and reason are true, and the reason explains the assertion.