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Question- Part 1) Why is it important that zinc dust is used in the debromination (of cholesterol) be a finely divided powder?

Part 2) How many chiral carbons does cholesterol have? How many sterioisomers are possible?

Part 3) What is responsible for the peak at 3400cm-1 in the infrared spectrum of cholesterol?

Part 4) Name three things for which Louis F.Fieser is noted?

Kindly Please put your best effort to provide the solution of above problem

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