In Gatterman reaction, which of the following catalyst is used?

Step-by-step solution

The Gatterman reaction is a modification of the Sandmeyer reaction used for the synthesis of aryl halides from aryl diazonium salts. In this reaction, finely divided copper powder is used as a catalyst along with a halogen acid such as HCl or HBr . Ar-N ₂^+ X ^- Cu powder / HX Ar-X + N ₂ Option (318007) represents the reagents for the Gatterman-Koch formylation reaction. Option (318010) represents the reagents for the Hoffmann bromamide degradation reaction. Therefore, copper powder and HBr are used in the Gatterma