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प्रश्न
Explain the term ‘cosmetics’ ‘talc’. Name a few main ingredients in cosmetics the role they play.
उत्तर
Cosmetics are mixtures of chemical compounds from natural sources or from synthetic sources.
Cosmetics - enhance or alter the appearance or fragrance of an individual. Some sources of compounds used in cosmetics include – modified natural oils and fats, processed minerals e.g. – zinc oxide, iron oxide, and talc.
Talc :
1. Talcum powder is made from talc – a mineral made up of – hydrated magnesium silicate, (contains elements – magnesium silicon, oxygen).
2. In its natural form – talc contains asbestos–which is removed from consumer products.
3. Talc – absorbs moisture, cuts down on friction, keeps skin dry and prevents rashes
संबंधित प्रश्न
Give two examples of the following substance.
Fuel
Give two examples of the following substance.
Building materials
Name the scientists who discovered the following:
Oxygen
Fill in the blank:
L.P.G. is used for ___________
Differentiate between the terms food preservatives and food processing with appropriate examples.
Differentiate between natural fibres & synthetic fibres.
Explain how medicines are a boon to mankind. State the positive & negative effects of medicines like aspirin and paracetamol.
Preservatives are added to food or beverages.
Food processing is an important procedure for obtaining marketable food products.
Give reasons for the following
Cosmetics may contain preservatives, as one of their ingredients.