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Which methods can be used to prepare alcohols?
I.addition of H2O to alkenes in the presence of H2SO4
II.reacting alkanes with a concentrated solution of CH3OH
III.hydrolysis of alkyl halides
IV.methanol can be prepared from CO(g) and H2(g) in the presence of a heterogeneous catalyst
V.removing one oxygen atom from a carboxylic acid
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