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प्रश्न
Differentiate between natural fibres & synthetic fibres.
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उत्तर
Natural fibres: such as cotton and wool, which were directly converted into clothing material.
Synthetic fibres: such as terylene, nylon and rayon are used in expensive clothing; carpets, etc.
संबंधित प्रश्न
How is chemistry helpful in improving the health of human beings?
What is the contribution of chemistry in following field?
Cosmetics
Name the scientists who discovered the following:
Atoms
_____________ help to increase the production of food.
Fill in the blank:
L.P.G. is used for ___________
Choose the correct alternative from the choices given below for the following statement:
The chemicals prescribed by a doctor in the treatment of infectious diseases are called
Explain in brief the importance of Chemistry in agriculture.
State the contributions of Antoine Lavoisier
Preservatives are added to food or beverages.
Give reasons for the following
Polyester is added to natural fiber cotton, to give terylene.
