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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
Give two examples of the following substance.
Medicines
What is the contribution of chemistry in following field?
Industry
Name the scientists who discovered the following:
Atoms
Name the scientists who discovered the following:
Oxygen
Name the scientists who discovered the following:
Elements
State the contributions of Dimitri Mendeleev
State the contributions of Antoine Lavoisier
State the contributions of John Dalton – towards the development of Chemistry.
Explain the term ‘cosmetics’ ‘talc’. Name a few main ingredients in cosmetics the role they play.
Preservatives are added to food or beverages.
