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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
Give two examples of the following substance.
Chemical war weapons
What is the contribution of chemistry in following field?
Clothing
Name the scientists who discovered the following:
Atoms
Write True or False against the following statement.
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Explain in brief the importance of Chemistry in the production of various products.
State the contributions of Dimitri Mendeleev
State the contributions of Antoine Lavoisier
State the contributions of John Dalton – towards the development of Chemistry.
Differentiate between the terms food preservatives and food processing with appropriate examples.
Preservatives are added to food or beverages.
