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प्रश्न
Name the scientists who discovered the following:
Oxygen
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उत्तर
A scientist who discovered Oxygen: Joseph Priestly
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संबंधित प्रश्न
Give two examples of the following substance.
Medicines
What is the contribution of chemistry in following field?
Industry
What is the contribution of chemistry in following field?
Cosmetics
What is the contribution of chemistry in following field?
Medicines
_____________ help to increase the production of food.
Differentiate between the terms food preservatives and food processing with appropriate examples.
Explain the term ‘cosmetics’ ‘talc’. Name a few main ingredients in cosmetics the role they play.
Differentiate between natural fibres & synthetic fibres.
Give reasons for the following
All medicines must be taken under proper doctors' supervision and in the correct dose.
Select the correct name from the choices given below for the following case.
A synthetic fibre used in clothing.
