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4-Nitrobenzaldehyde is an organic aromatic compound containing a nitro group para-substituted to an aldehyde .. aromatic. aromatic. nitro. Nitro compound. group. Functional group. aldehyde. aldehyde. Nitrobenzyldiacetate is obtained by the reaction of 4-nitrotoluene and chromium -LRB- VI -RRB- oxide in acetic anhydride .. 4-nitrotoluene. 4-nitrotoluene. acetic anhydride. acetic anhydride. 4-Nitrobenzaldehyde is obtained by hydrolysis by sulfuric acid in ethanol .. sulfuric acid. sulfuric acid. ethanol. ethanol