Wxplain Gattermann-Koch reaction for the formation of benzaldehyde

In Gatterman -Koch reaction , benzene is converted to benzaldehyde. The set of chemicals used for the convertion

Benzoic acid to benzaldehyde

In Gattermann reaction for preparation of chlorobenzene from diazonium salt, the catalyst used is

What is Gater man-Koch formylation reaction. Give equation.

Which of the following type of reaction occurs during the formation of peptide bond and glycosidic bond ?

Ester formation involves the reaction of

Reimer -Tiemann reaction involves the formation of X from phenol through the intermediate Y.What are Xand Y?

Which of the following reaction leads to the formation of bezonitrile?

Which of the following reactions result in the formation of conjugated diene?