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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.
Medicines
How is chemistry helpful in improving the health of human beings?
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:
Atoms
_____________ help to increase the production of food.
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
State the contributions of John Dalton – towards the development of Chemistry.
Give reasons for the following
Aspirin is one of the most widely used medications – globally.
Give reasons for the following
Ordinary soap is wasted in hard water.
