INDIAN GEOGRAPHY

Detailed explanation-1: -The deposition of alluvium in a vast basin lying at the foothills of the Himalaya over millions of years, formed this fertile plain. It spreads over an area of 7 lakh sq. km. The plain being about 2400 Km long and 240 to 320 Km broad, is a densely populated physiographic division.

Detailed explanation-2: -The correct answer is Bhangar. The largest part of the northern plain is formed of older Alluvium. They lie above the flood plains of the rivers and present a terrace-like feature. This part is known as Bhangar.

Detailed explanation-3: -The northern plains are formed by the alluvial deposits of the three major river systems of the Indus, the Ganga and the Brahmaputra along with their tributaries. This plain is completely formed of alluvial soil.

Detailed explanation-4: -The Northern Plains of India have been formed by the Ganga, the Indus and the Brahmaputra rivers and their tributaries. The northern part of the Indian Peninsula subsided due to the upliftment of the Himalayas in the Tethys sea and resulted in a large basin.

Detailed explanation-5: -The northern plain lies between the Himalayas and the peninsular plateau of India and is formed by the depositional work of three river systems namely the Indus, the Ganga and the Brahmaputra. Hence, the northern plains are called deposited plains.