Silk

Q. The scientific name of silkworm is Bombyx Mori.

1. True
2. False

Q.

When silk is burnt they smell like burning hair . however when cotton is burnt they smell like burning paper. Why?

Q.

Give examples of how silk and wool are used?

Q.

What are the sources of wool?

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

Q.

Arrange the different steps involved in the processing of silk, starting from rearing silkworms.

1. Boiling cocoons
2. Rearing silkworm
3. Spinning silk fibre
4. Reeling fibres
5. Weaving the yarn

Q. Which of the following is not a type of silk?​

1. Moth silk​
2. Mulberry silk​
3. Mooga silk​
4. Tassar silk​

Q. Which of the following is the source of the silk fibre?

1. 
2. 
3. 
4. 

Q. Linen fibre is obtained from flax plant.

1. False
2. True

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

Q. silk is the finest quality of silk.

1. Muga
2. Mulberry
3. Tussar
4. Eri

Q. Peace silk was produced in the year

1. 1990
2. 1992
3. 1991
4. 1993

Q.

What are natural fibres? Differentiate between cellulosic fibres and protein fibres.

Q. The silk moths that lay eggs on termanalia oak plantation produce ________ silk.

1. eri
2. tasar
3. muga
4. kosa

Q. Silk fibre is obtained from the larva of a silk moth.

1. True
2. False

Q. The hardened protein that becomes silk fibres is the of the silkworm.

1. cocoon
2. larva
3. egg

Q. Reeling of silk is ​

1. A process of making silk reels.​
2. Weaving of silk cloth.​
3. The process of taking silk threads from cocoon.​
4. Spinning of silk fibres.​

Q. Ayesha took out a thread from the edge of her new saree and burnt it. When burnt, it smelled like hair. The saree is most probably made of ______ fibres.

1. silk
2. cotton
3. coir
4. jute

Q. Match the words of Column I with those given in Column II:

	Column I		Column II
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

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

Q. silk is extremely soft, lustrous, elastic, and can be dyed into different colours.

1. Mooga
2. Mulberry
3. Tassar

Q. Silkworms secrete fibre made of

1. Fat
2. Cellulose
3. Protein
4. Vitamins

Q.

1.Silk from ________ (mulberry/castor) silkworm is mainly used for commercial purposes.

Q. Jessica is planning to keep a stall of different types of silks in the upcoming saree festival. Help her to find different types of silks from the following.

1. Eri
2. Kosa
3. Angora
4. Muga

Q. Fleece is the thick hairy covering on sheep.

1. False
2. True

Q. Aysha took out a thread from the edge of her new saree and burnt it. When burnt, it smelled like hair. The saree is most probably made of ______ fibres.

1. silk
2. cotton
3. jute
4. coir

Q. Linen fibre is obtained from flax plant.

1. False
2. True

Q.

State whether the following statements are True or False. If false, correct them. [5 MARKS]
(a) Yak hair is not used to make woolen fabric.
(b) In the process of obtaining wool from fleece, sorting is done after scouring.
(c) The rearing of silkworms for obtaining silk is called silviculture.
(d) In India, camels and goats are generally reared for obtaining wool.
(e) Silkworms are caterpillars of the silk moth.

Q. Choose the correct pairs.

1. Tasar - Wool
2. Muga - Silk
3. Kosa - Wool
4. Eri - Silk

Q.

Other than sheep and goats, wool is obtained from which other animals native to South America?

1. Camel and llama

2. Alpaca and llama

3. Camel and alpaca

4. Yak and alpaca

Q. Choose the characteristics of silk.

1. Strong fibre
2. Rough
3. Soft and smooth
4. Expensive