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प्रश्न
Give reasons for the following
Titanium dioxide is an important ingredient in cosmetics.
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उत्तर
It is a natural pigment powder which provides a base for mineral makeup. It provides mild sun protection and as a pigment gives a white colouration to coloured ingredients.
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Give two examples of the following substance.
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Name the scientists who discovered the following:
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Give reasons for the following
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Give reasons for the following
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