Final answer:
Primary alcohols can be formed by reducing aldehydes, carboxylic acids, and esters, while secondary alcohols are synthesized by reducing ketones.
Explanation:
Primary alcohols can be formed by reducing aldehydes, carboxylic acids, and esters while secondary alcohols are synthesized by reducing ketones. A 3⁰ alcohol cannot be produced from a hydride reduction. Aldehydes and ketones can be reduced by NaBH₄ or LiAlH₄, while carboxylic acids and esters are reduced only by LiAlH₄.
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