Cannizzaro reaction and Aldol condensation reaction
Cannizzaro reaction and Sandmeyer's reaction
Friedel-Crafts reaction and Gattermann-Koch reaction
Cannizzaro reaction and Reimer-Tiemann reaction
Sandmeyer's reaction and Aldol condensation reaction
The correct answer is (C):Friedel-Crafts reaction and Gattermann-Koch reaction
Such a group of atoms is called a molecule. Obviously, there must be some force that holds these constituent atoms together in the molecules. The attractive force which holds various constituents (atoms, ions, etc.) together in different chemical species is called a chemical bond.
There are 4 types of chemical bonds which are formed by atoms or molecules to yield compounds.