Question

give an account of the northern plains of india

Answer 1

Glaciers in the Great Himalayas — Gangotri, Chaturangi, Bhagirathi, Kharak, Satopanth, Kamet, Milam and Pindari.
Passes in the Great Himalayas — Karakoram pass, Shipkila pass, Nathula, Bomdila pass.

Answer 2

The Great plain of Northern India lies on the south of the Himalayas. It is, in fact, bounded by the Himalayas on the north and the Deccan plateau on the south. This plain stretches for about 2,400 km from east to west and 200 to 400 km from north to south. It covers an area of about 5,80,000 sq km.
The Great plain of Northern India was formed by the sediments brought down by the Indus-Ganga-Brahmaputra and their tributaries and it is popularly known as the Indo-Ganga-Brahmaputra plain. Geologists suggest that there was a shallow trough or geosyncline in between the Himalayas and the Deccan plateau during the latter geological period of the formation of the Himalayas.
After the upliftment of the Himalayas, sediments and debris brought down by the rivers, began to accumulate there to form the vast alluvial plain of northern India.
This extensive plain is level and monotonous; it is characterized by some local diversities. Hence, it may be classi­fied into three divisions:

The Punjab plain drained by the Indus,

The Ganga plain drained by the Ganga and

The Brahmaputra valley drained by the Brahmaputra.