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प्रश्न
Explain the term ‘cosmetics’ ‘talc’. Name a few main ingredients in cosmetics the role they play.
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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.
Food preservatives
Give two examples of the following substance.
Building materials
Name the chemicals which help in increasing food production.
Fill in the blank:
Inert gases were discovered by ___________
State the contributions of John Dalton – towards the development of Chemistry.
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.
Give reasons for the following
Ordinary soap is wasted in hard water.
Food processing is an important procedure for obtaining marketable food products.
