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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
The silkworm is (a) a caterpillar, (b) a larva. Choose the correct option
Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.
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.
Silk fibre is obtained from ______.
State whether the following statement is True or False. If false, correct them.
Silkworms are caterpillars of silk moth.
Some words related to silk are jumbled up. Write them in their correct form.
WILSMORK
Complete the paragraph related to the life history of silk moth by filling in the blanks.
The ___(a)___ silk moth lays ___(b)___, from which hatch ___(c)___ called ___(d)___ or ___(e)___. They grow in size and when the caterpillar is ready to enter the next stage of its life history called ___(f)___, it first weaves a covering to hold itself, which is known as ___(g)___.
______ are boiled to get the silk.
The larva of a silkworm is called ______.
List a few characteristic features of silk.
