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Give names of three natural polymers. Write the place of their occurance and names of monomers from which they are formed.

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Give any four functional groups containing oxygen as the heteroatom in it. Write name and structural formula of one example each.

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Give names of three functional groups containing three different hetero atoms.

Write name and structural formula of one example each.

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What is meant by vinegar and gashol? What are their uses?

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What is a catalyst? Write any one reaction which is brought about by use of catalyst?