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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
Give two examples of the following substance.
Medicines
Give two examples of the following substance.
Chemical war weapons
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:
Safety lamp
Name the scientists who discovered the following:
Elements
Write True or False against the following statement.
Antibiotics are used as preservatives:
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.
