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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 the 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 a reason for your answer.
उत्तर
The thread that bums with the smell of burning hair are from a pure silk saree and the thread that bums with the smell of burning paper are 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
Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.
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 |
______ is the strongest natural fibre.
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.
RINGLEE
Describe the life history of the silk moth with the help of figures from various stages.
India stands ______ in silk production in the world.
The silk moth feed on ______.
The larva of a silkworm is called ______.
List a few characteristic features of silk.
