Statement 1: Informal communication is also termed as Grapewine communication. Statement 2: It is necessary that the sender and receiver of information should be face to face with each other in order to make effective communication.

Statement 1 is correct - informal communication is indeed called 'grapevine' communication, referring to unofficial information networks. Statement 2 is incorrect because face-to-face interaction is NOT necessary for effective communication - written, telephone, or digital communication can be equally effective. Physical proximity is not required for understanding.