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प्रश्न
HOTS
Silk fiber is used to manufacture parachute. Why?
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उत्तर
- Silk is the strongest natural fibre.
- It is thin light in weight, strong.
- It is easly to peak and unfold.
- It is also fire resistant.
- It is dries quickly.
- It is also resistant to abrasion and chemicals.
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संबंधित प्रश्न
The silkworm is (a) a caterpillar, (b) a larva. Choose the correct option
Match the words of Column I with those given in Column II:
| Column I | Column II |
| Scouring | Yields silk fibres |
| Mulberry leaves | Wool yielding animal |
| Yak | Food of silk worm |
| Cocoon | Reeling |
| Cleaning sheared skin |
A natural fibre obtained by boiling cocoons is called ______.
The cultivation and production of silk is known as ______.
Who invented the Ahimsa silk?
The term sericulture is used for ______.
State whether the following statement is True or False. If false, correct them.
The rearing of silkworms for obtaining silk is called silviculture.
Some words related to silk are jumbled up. Write them in their correct form.
TURECULRISE
Some words related to silk are jumbled up. Write them in their correct form.
RINGLEE
Steps for the production of silk are given below in a jumbled order. Arrange them in their proper sequence.
- Eggs are warmed to a suitable temperature for the larvae to hatch from eggs.
- Fibres are taken out from the cocoon.
- After 25 to 30 days, the caterpillars stop eating and start spinning cocoons.
- The larvae/caterpillars or silkworms are kept in clean trays along with freshly chopped mulberry leaves.
- Female silk moths lay eggs.
- Cocoons are kept under the sun or boiled in water.
Paheli went to the market to buy sarees for her mother. She took out a thread from the edge of the two sarees shown by the shopkeeper and burnt them. One thread burnt with a smell of burning hair and the other burnt with the smell of burning paper. Which thread is from a pure cotton saree and which one from a pure silk saree? Give reason for your answer.
Describe the life history of the silk moth with the help of figures of various stages.
______ are boiled to get the silk.
The production of silk is called ______.
The larva of a silkworm is called ______.
