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Alcohols, Phenols and Ethers: NEET 2023

Hard· Alcohols (Chemical Properties)· +4 / −1
Which amongst the following will be most readily dehydrated under acidic conditions ? (Skeletal formulas, described from the figure) **(1)** CH3−CH(NO2)−CH2−CH2−CH(OH)−CH3\mathrm{CH_3{-}CH(NO_2){-}CH_2{-}CH_2{-}CH(OH){-}CH_3} (5-nitrohexan-2-ol) **(2)** CH3−CH(NO2)−CH2−CH(OH)−CH3\mathrm{CH_3{-}CH(NO_2){-}CH_2{-}CH(OH){-}CH_3} (4-nitropentan-2-ol) **(3)** CH3−CH(OH)−CH2−CH(OH)−CH3\mathrm{CH_3{-}CH(OH){-}CH_2{-}CH(OH){-}CH_3} (pentane-2,4-diol) **(4)** CH3−CH(NO2)−CH(OH)−CH2−OH\mathrm{CH_3{-}CH(NO_2){-}CH(OH){-}CH_2{-}OH} (3-nitrobutane-1,2-diol)
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