The extreme points of India include the coordinates that are further north, south, east or west than any other location in India; and the highest and the lowest altitudes in the country. The northern-most and eastern-most points claimed by India are both in territory disputed between India and China. With the exception of Kanyakumari (Cape Comorin), the southern-most location of mainland India, all other extreme locations are uninhabited.

The northernmost point that India claims lies in territory now administered by China as part of Xinjiang but once claimed by Hunza and therefore claimed by India as part of the disputed state of Jammu and Kashmir. The northernmost point administered by India lies in Jammu & Kashmir. India’s claim to the whole of Kashmir is disputed by Pakistan and China, with the territory currently partitioned into Pakistan’s states of Azad Kashmir and Gilgit-Baltistan, the Chinese region of Aksai Chin and the Indian-administered state of Jammu and Kashmir.

India’s eastern-most state is Arunachal Pradesh. Part of the state is claimed by China as “South Tibet”, though administered by India, The easternmost of Indian-administered territory is located in this disputed region.

Source: http://en.wikipedia.org/wiki/List_of_extreme_points_of_India