Convert Benzoic acid to Benzaldehyde ?

How will you convert benzoic acid into benzaldehyde ?

How will you bring about the following conversions in not more than two steps ? i. Propanone to propene ii. Benzoic acid to Benzaldehyde iii. Ethanol to 3-Hydroxybutanal iv. Benzene to m-Nitroacetopenone v. Benzaldehyde to Benzophenone vi. Bromobenzene to 1-Phenylethonal vii. benzaldehyde to 3-Phenylpropan-1-ol viii. Benzaldehyde to alpha -Hydrophylacetic acid ix. Benzoic acid to m-Nitrobenzyl alcohol

How will you convert benzoic acid to benzamide ?

Do the following conversions in not more than two steps Benzoic acid to benzaldehyde

How will your convert: (i) Acetic acid to methane (ii) Benzoic acid to benzaldehyde.

How will you convert : (i) Benzoic acid to benzaldehyde (ii) Acetophenone to benzoic acid (iii) Ethanoic acid to 2-hydroxyethanoic acid ?