The major organic product(s) that result(s) from reacting H₂C-CHBr with magnesium, then propyne, then formaldehyde, then mild aqueous acid, is: (a) a mixture 2-propen-1-ol and propyne. (b) a mixture of ethene and 2-butyn-1-ol. (c) a mixture of ethene, propyne, and formaldehyde. (d) a mixture of 1-penten-3-yne and formaldehyde. Tertiary alcohols can be formed by mixing: (a) primary organometallics (like ethyllithium) with ketones. (b) secondary organometallics (like cyclopentyllithium) with aldehydes. (c) secondary organometallics (like cyclopentyllithium) with ketones. (d) both a and c.

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Diol

In chemistry there are so many chemical compounds that have a hydroxyl group but a chemical compound having two hydroxyl groups (-OH) is termed as a diol. It also implies the presence of two alcohols whereas polyols contain two or more than two hydroxyl groups (-OH). Glycol or 1,2-diol is an aliphatic diol that has two alcohol groups on adjacent carbon atoms. In industries, the most commonly used diol is ethylene glycol.