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Silk

The ratio of ...

Question

The ratio of cocoon to silk obtained by sericulture is

A

10:1

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B

5:1

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C

20:1

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D

2:1

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Solution

The correct option is A
10:1

The ratio of cocoon to silk obtained by sericulture is 10:1. That is, 10 kg of silkworm cocoons yield just 1 kg of silk.

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Question 1

The rearing of silkworms for obtaining silk is called
(a) cocoon
(b) silk
(c) sericulture
(d) silviculture

Q. Around 10 kg of silkworm cocoons are needed to produce 1 kg of silk.

Q. Silk can be obtained from the cocoon of silkworms by the process of shearing.

Q. Fill in the blanks:
1. Silk threads are made from a sticky secretion secreted by the ............................... of the silkworms.
2. The finest wool is obtained from ............................... silk moth.
3. The most common silk moth is ............................... silk moth.
4. The cocoons are put in ............................... to loosen the silk fibre.
5. ............................... and ............................... are animal fibres.

Q. Silk fibre is obtained from the cocoons by the process of _________.

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