JEE Main Chemistry question
How many of the following alcohols are secondary in nature? Butan-2-ol, 2,2-dimethylpropan-1-ol, 2-methylpropan-2-ol, propane-1,2-diol, propan-2-ol, cyclobutanol, 2-methylcyclopentanol, propane-1,3-diol, propane-1,2,3-triol.
Answer: 6
Solution
A secondary alcohol has its hydroxyl-bearing carbon attached to exactly two other carbons. Checking each: butan-2-ol (secondary), propane-1,2-diol (the C-2 is secondary), propan-2-ol (secondary), cyclobutanol (secondary, ring carbon with two ring-carbon
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