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प्रश्न
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.
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उत्तर
The thread that burns with the smell of burning hair is from a pure silk saree and the thread that burns with the smell of burning paper is from a pure cotton saree. It is because both silk and hair are protein fibres whereas both cotton and paper are carbohydrates.
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संबंधित प्रश्न
Out of the following, which are the two terms related to silk production?
Sericulture, floriculture, moriculture, apiculture and silviculture
Hints:
(1) Silk production involves cultivation of mulberry leaves and rearing silkworms.
(2) Scientific name of mulberry is Morus alba.
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 |
Who invented the Ahimsa silk?
Write about any three uses of silk.
Which of the following is not a type of silk?
The general process that takes place at a sheep shearing shed is ______.
Some words related to silk are jumbled up. Write them in their correct form.
BELMURRY
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.
Describe the life history of the silk moth with the help of figures of various stages.
