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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
How is chemistry helpful in improving the health of human beings?
What is the contribution of chemistry in following field?
Medicines
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
Food items like jams and pickles are protected by using ___________.
Write True or False against the following statement.
D.D.T. is an important fertiliser:
Choose the correct alternative from the choices given below for the following statement:
Mortar is used as a
State the contributions of Antoine Lavoisier
Give reasons for the following
Ordinary soap is wasted in hard water.
