Which lies at the Southern tip of the mainland of India ​

Kanyakumari or Cape Comorin

Explanation:

The southernmost point of Indian Mainland is Kanyakumari. Kanyakumari is also known as Cape Comorin and is located in the state of Tamil Nadu.

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

answer; group think;