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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.
Write about any three uses of silk.
HOTS
Silk fiber is used to manufacture parachute. Why?
The general process that takes place at a sheep shearing shed is
The term sericulture is used for
State whether the following statements are True or False. If false, correct them.
Silkworms are caterpillars of silk moths.
Complete the paragraph related to the life history of the 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)____.
Which of the following fibers is considered the strongest natural fiber?
India stands ______ in silk production in the world.
List a few characteristic features of silk.
