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Q1. Small fluffy fibres which are separated from the hair of sheep during combing are called

• Resham
• Fluffs
• Burrs
• Fleece

Solution

Small fluffy fibres which are separated from the hair of sheep during combing are called burrs.

Q2. Given below are some breeds of sheep and the states they are found in. Which of the following is an incorrect match?

• Patanwadi - Rajasthan
• Marwari - Gujarat
• Nali - Haryana
• Lohi - Punjab

Solution

Patanwadi breed of sheep is found in Gujarat.

Q3. South America is famous for its 

• Goat wool
• Sheep wool
• Llama wool
• Camel wool

Solution

South America is famous for wool obtained from llama.

Q4. The most common variety of silk is

• Tassar silk
• Mulberry silk
• Mooga silk
• Kosa silk

Solution

The most common silk moth is the mulberry silk moth and therefore, the most common variety of silk is mulberry silk.

Q5. Which of the following is the most common silk moth?

• Tassar silk moth
• Mulberry silk moth
• Mooga silk moth
• Eri silk moth

Solution

Mulberry silk moth is the most common variety of silk moth. The silk obtained from this variety is called mulberry silk.

Q6. Angora wool is obtained from

• Angora sheep
• Angora yak
• Angora goat
• Angora camel

Solution

Angora wool is obtained from Angora goats which are found in the hilly regions such as Jammu and Kashmir.

Q7. Silkworms require a lot of feeding during the 

• Caterpillar stage
• Cocoon stage
• Adult stage
• Egg stage

Solution

The larvae also known as caterpillars or silkworms feed on cut mulberry leaves. They eat day and night and increase enormously in size.

Q8. We can obtain finer woollen fibres from

• Beard hair
• Under hair, close to skin
• Tail hair
• Facial hair

Solution

Sheep has fine, soft, under hair close to the skin which can be used to make fine woollen fibres.

Q9. Discovery of silk was made in 

• India
• Japan
• France
• China

Solution

Silk is said to have originated from China.

Q10. The process of separation of fleece of a sheep according to the quality of woollen fibres is called

• Shearing
• Sorting
• Scouring
• Combing

Solution

The process of separation of fleece of a sheep into sections according to the quality of woollen fibres is called sorting.

Q11. Which of the following is not true with respect to silk fibre?

• It is soft.
• It is lustrous.
• It can be dyed in different colours.
• It is inelastic.

Solution

Silk fibre is soft, lustrous, elastic and can be dyed in beautiful colours.

Q12. Which one of the following methods is not used for obtaining silk fibres from cocoon?

• A pile of cocoon is kept under the Sun.
• A pile of cocoon is boiled in water.
• A pile of cocoon is exposed to steam.
• A pile of cocoon is beaten manually.

Solution

For obtaining silk fibres, a pile of cocoon is either kept under the Sun or boiled in water or exposed to steam.

Q13. Silk is obtained from silk moth by breaking the cocoon in 

• Egg stage
• Adult stage       
• Larval stage
• Pupal stage

Solution

Silk is obtained from silk moth by breaking the cocoon at the end of the pupal stage.

Q14. The process of taking out silk fibres from the cocoon for use as silk is called

• Combing
• Shearing
• Molting
• Reeling

Solution

The process of taking out silk fibres from the cocoon for use as silk is called reeling. It is carried out in special machines which unwind the fibres of silk from the cocoons.

Q15. Bakharwal breed of sheep is famous for making

• Carpet
• Sweater
• Woollen shawl
• Hosiery

Solution

Bakharwal breed of sheep from Jammu and Kashmir is famous for making woollen shawls.

Q16. Who was the emperor of China when silk was discovered?

• Si-lung-Chi
• Huang-ti
• Taizong
• Hongwu 

Solution

According to Chinese legend, silk was discovered during the period of Huang-ti.

Q17. Which of the following correctly denotes the order of stages in the life history of a silkmoth?

• Egg → Larva → Pupa → Adult
• Larva → Egg → Pupa → Adult
• Egg → Pupa → Larva → Adult
• Pupa → Larva → Egg → Adult

Solution

Stages in the life history of a silkmoth are egg followed by larva, pupa and adult.

Q18. Which of the following is not a type of silk?

• Mooga silk
• Tassar silk
• Kosa silk
• Angora silk

Solution

Mooga, Tassar and Kosa are different varieties of silk. Angora wool is obtained from Angora goat.

Q19. The process of rearing of silkworms is called

• Sericulture
• Apiculture
• Horticulture
• Pisciculture

Solution

The process of rearing of silkworms to obtain silk is called sericulture.

Q20. The caterpillar completely covers itself by silk fibres and forms a covering called 

• Yarn
• Reel
• Pupa
• Cocoon

Solution

During its life cycle, the silkworm spins a covering of silk fibres called cocoon around itself. The silkworm continues to develop in the form of pupa inside the cocoon to form the silk moth.

Q21. Which of the following is responsible for causing sorter's disease?

• Virus, Anthrax
• Algae, Anthrax
• Bacteria, Anthrax
• Protozoa, Anthrax

Solution

The sorters in the wool industry get infected by a bacteria called anthrax which causes a fatal blood disease called sorter's disease.

Q22. Which country leads in silk production?

• India
• Bangladesh
• China
• Egypt

Solution

China leads the world in silk production.

Q23. The caterpillars feed on mulberry leaves for approximately

• One month
• Two months
• 15 days
• Three months

Solution

The caterpillars feed on mulberry leaves for about a month (25-30 days) and then stop eating and get ready to spin cocoons.

Q24. Rampur bushair and Bakharwal are breeds of

• Sheep
• Camel
• Goat
• horse

Solution

Rampur bushair and Bakharwal are breeds of sheep. Rampur bushair is found in Himachal Pradesh while Bakharwal breed is found in Jammu and Kashmir.

Q25. At which stage of its life cycle does the silkworm weave a net to hold itself?

• Egg stage
• Larval stage
• Pupal stage
• Adult stage

Solution

During the larval stage, a silkworm weaves a net to hold itself and then swings its head from side to side in the form of figure of eight and enters the pupal stage.

Q26. Marwari breed of sheep yields

• Soft wool
• Coarse wool
• Durable wool
• Carpet wool

Solution

Marwari breed of sheep from Gujarat yields coarse wool.

Q27. Which of the following animals does not yield wool?

• Cow
• Yak
• Sheep
• Camel

Solution

Wool is obtained from the thick coat of hair present on the bodies of animals such as sheep, yak and camel. A cow does not have a thick hairy coat on its body and therefore, cannot yield wool.

Q28. Silkworms feed on the leaves of

• Neem tree
• Mango tree
• Mulberry tree
• Oak tree

Solution

Silkworms feed on the fresh leaves of mulberry tree which not only provides them with food but also moisture. 

Q29. Which of the following animals can yield wool? (A) Sheep, Yak (B) Camel, Llama (C) Goat, Alpaca (D) Reindeer, Camel

• Only A
• Only B
• Only C
• A, B and C

Solution

Wool is obtained from animals such as sheep, yak, camel, goat, llama and alpaca which have a thick coat of hair on their body.

Q30. The famous Pashmina shawls are made in

• Delhi
• Jammu and Kashmir
• Himachal Pradesh
• Assam

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