JEE Main Chemistry question
How many alcohols from the following set will yield geometric isomers on dehydration? Propan-2-ol, 2-methylpropan-1-ol, pentan-2-ol, ethanol, propan-1-ol, 2-methylpropan-2-ol, butan-1-ol, butan-2-ol, hexan-3-ol.
Answer: 3
Solution
Geometric (cis/trans) isomers on dehydration require the resulting alkene to have two different groups on each doubly-bonded carbon, which happens specifically for pentan-2-ol (giving pent-2-ene), butan-2-ol (giving
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