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प्रश्न
Give reasons for the following
Polyester is added to natural fiber cotton, to give terylene.
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
Give two examples of the following substance.
Building materials
Name the chemicals which help in increasing food production.
What is the contribution of chemistry in following field?
Cosmetics
Name the scientists who discovered the following:
Safety lamp
Name the scientists who discovered the following:
Elements
Write True or False against the following statement.
Antibiotics are used as preservatives:
Choose the correct alternative from the choices given below for the following statement:
Mortar is used as a
Explain the term ‘cosmetics’ ‘talc’. Name a few main ingredients in cosmetics the role they play.
Give reasons for the following
Titanium dioxide is an important ingredient in cosmetics.
