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प्रश्न
Give reasons for the following
Cosmetics may contain preservatives, as one of their ingredients.
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उत्तर
They extend the shelf life of a cosmetic and may prevent growth of microorganisms.
संबंधित प्रश्न
Give two examples of the following substance.
Fuel
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
Fill in the blank:
L.P.G. is used for ___________
Fill in the blank:
Inert gases were discovered by ___________
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 the term ‘cosmetics’ ‘talc’. Name a few main ingredients in cosmetics the role they play.
Food processing is an important procedure for obtaining marketable food products.
Give reasons for the following
Polyester is added to natural fiber cotton, to give terylene.
