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प्रश्न
Choose the correct alternative from the choices given below for the following statement:
Mortar is used as a
विकल्प
plastic material Urea is an
a building material
an insecticide
as medicine
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उत्तर
a building material
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संबंधित प्रश्न
What is the contribution of chemistry in following field?
Industry
What is the contribution of chemistry in following field?
Medicines
Name the scientists who discovered the following:
Elements
_____________ help to increase the production of food.
Food items like jams and pickles are protected by using ___________.
State the contributions of Antoine Lavoisier
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
Cosmetics may contain preservatives, as one of their ingredients.
