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प्रश्न
Give reasons for the following
Polyester is added to natural fiber cotton, to give terylene.
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उत्तर
Polyester is added to natural fiber cotton, to give terylene because this combination makes the fabric easy to clean and crease-resistant.
संबंधित प्रश्न
Name the chemicals which help in increasing food production.
What is the contribution of chemistry in following field?
Cosmetics
What is the contribution of chemistry in following field?
Medicines
Name the scientists who discovered the following:
Safety lamp
Name the scientists who discovered the following:
Elements
Explain in brief the importance of Chemistry in the production of various products.
Differentiate between natural fibres & synthetic fibres.
Explain how medicines are a boon to mankind. State the positive & negative effects of medicines like aspirin and paracetamol.
Give reasons for the following
Titanium dioxide is an important ingredient in cosmetics.
Give reasons for the following
Cosmetics may contain preservatives, as one of their ingredients.
