Which of the following reactions does not give benzaldehyde?

Rosenmund reaction Etard reaction Gatterman-Koch reaction Friedel-Craft acylation reaction

Friedel-Craft acylation reaction

Friedel-Crafts acylation of benzene produces an aromatic ketone and not benzaldehyde. Benzene on Gatterman-Koch reaction gives benzaldehyde, so does toluene on Etard reaction. Rosenmund reaction also gives benzaldehyde but from benzoyl chloride.