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  4. The conversion of benzaldehyde into benzyl alcohol takes place by:

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Q. The conversion of benzaldehyde into benzyl alcohol takes place by:

Bihar CECEBihar CECE 2004Aldehydes Ketones and Carboxylic Acids

Solution:

Key Explain all term to find correct answer
(a) Fittig reaction : Two molecules of aryl halide react to form diphenyl.
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(b) Wurtz Fittig reaction : One molecule of alkyl halide and one molecule of aryl halide combine in presence of sodium to form higher homolog of benzene.
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(c) Wurtz reaction : Two molecules of alkyl halide react together to form alkane having double number of carbon atoms as in alkyl halide.
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(d) Cannizaro reaction : Aldehydes which do not have $\alpha$-hydrogen atom undergo disproportion reaction (half of the molecule are oxidised and half are reduced.)
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$\therefore $ Benzaldehyde is converted into benzyl alcohol by Cannizaro reaction.