The Northern Plains

The direct answer is A, south of the Himalayas. The Northern Plains are broad depositional plains formed mainly by the Indus, Ganga and Brahmaputra river systems and their tributaries. They lie immediately south of the Himalayan foothills and extend across much of northern India. Option A is correct because it gives their geographical position. Option B is wrong: southern islands are separate coastal or oceanic landforms. Option C is wrong because the western sea is not the location of the Northern Plains. Option D is wrong because the Deccan Plateau lies much farther south and is a plateau, not the alluvial Northern Plains. Reasoning cue: mountains in the north, alluvial plains immediately below them.

The Northern Plains are made of alluvium brought by rivers. Exam tip: connect alluvium with river deposits.

The Northern Plains are formed by the Indus, Ganga and Brahmaputra systems. Exam tip: remember all three systems together.

The Northern Plains are fertile because of alluvial soil. Exam tip: link fertile plains with Northern Plains.

The Northern Plains are a major plain division of India. Exam tip: remember Northern Plains when the word plain appears.

Rivers deposit alluvial soil and make the plains fertile. Exam tip: remember the link between rivers and fertile soil.

The direct answer is C: the Northern Plains have a level and extensive surface. These plains were built mainly by the deposition of alluvium brought by the Indus, Ganga, Brahmaputra and their tributaries. Repeated deposition spread fine sediments over a very broad area, making the land generally flat, although small local variations exist. A, rugged mountainous, describes mountain relief, especially the Himalayas, not the general surface of these plains. B, coral island-like, describes a special coastal or island environment and is unrelated to the alluvial Northern Plains. D, volcanic cone, is a steep cone-shaped landform produced by volcanic activity, not the broad depositional surface of the plains. Thus C is the most accurate general description. Memory cue: wide river deposits usually produce broad, level plains.

Fertile soil and level surface make agriculture easier. Exam tip: remember alluvial plains for agriculture clues.

The Ganga Plain is a main part of the Northern Plains. Exam tip: connect the Ganga river system with Ganga Plain.

Punjab Plain is linked with the Indus and its tributaries. Exam tip: remember Punjab Plain with Indus system.

Brahmaputra Plain is linked with the Assam region. Exam tip: connect Brahmaputra with north-eastern India.

Himalayan rivers bring soil and silt to form the Northern Plains. Exam tip: connect Himalayan rivers with alluvial plains.

The land between two rivers is called Doab. Exam tip: understand Doab as land between two waters.

Bhangar is the old alluvium of the Northern Plains. It occurs on relatively higher land and often contains calcareous deposits called kankar. Khadar, in contrast, is newer alluvium deposited in river floodplains. Exam tip: remember Bhangar = old alluvium and Khadar = new alluvium.

The direct answer is C: Khadar. Alluvium is sediment deposited by rivers. In the Northern Plains, newer alluvium deposited during relatively recent floods is called Khadar. It is usually found in lower floodplain areas and is renewed frequently, so it is generally fertile. A, Bhabar, is a narrow gravel belt along the Himalayan foothills where streams often disappear into porous deposits; it is not the name for new alluvium. B, Terai, is the wet belt south of Bhabar, not the soil category itself. D, Bet, is a regional term used for certain riverine or island-like elevated areas and is not the standard name for new alluvium. Therefore C is correct. Memory cue: Khadar means newer floodplain alluvium; Bhangar means older alluvium.

Bhabar is a pebbly belt at the foothills of Shiwalik. Exam tip: connect Bhabar with foothill zone.

The Terai region lies to the south of the Bhabar belt. In Bhabar, streams disappear into the porous layer of pebbles and boulders; farther south, this water re-emerges and creates the wet, marshy Terai region. Therefore, the north option is incorrect. Exam tip: remember the north-to-south sequence—Bhabar, Terai, Bhangar, Khadar.

Direct answer: Option B is correct. The Terai is a wet, marshy belt lying south of the Bhabar region. Rivers that disappear into the porous pebbles of Bhabar re-emerge in the Terai, so the ground becomes moist and waterlogged. This explains why the region traditionally had marshes and dense vegetation. Option A is wrong because a dry sandy area describes desert conditions, not the normal Terai character. Option B works because wetness and marshes are its defining general features. Option C is wrong because the Terai is not a completely rocky plateau; it is a low depositional belt. Option D is wrong because marine coral regions occur in particular seas and islands, not in this Himalayan foothill belt. Do not confuse Bhabar and Terai: Bhabar is the coarse, pebbly belt where streams may sink, while Terai is the wetter belt where streams reappear. Memory cue: “Bhabar hides water; Terai brings it back.”

In Bhabar, rivers disappear into the pebbly surface. Exam tip: remember Bhabar with seepage of water.

Khadar is fresh alluvium deposited in new layers by rivers, especially in floodplains. It contains fine silt and minerals, so it is generally considered new and fertile. Older alluvium is called Bhangar, not Khadar. Exam tip: remember Khadar as new alluvium of floodplains and generally fertile.

Bhangar is old alluvium, generally found on the higher parts of river floodplains. It often contains calcareous nodules called kankar. New alluvium is called Khadar and is renewed by annual floods. Exam tip: remember Bhangar = old alluvium; Khadar = new alluvium.

Long-term river deposition made these plains extensive. Exam tip: connect plain formation with river deposition.

The Northern Plains are considered about 2400 kilometres long. Exam tip: connect length with west to east spread.

The width of the Northern Plains is considered about 240 to 320 kilometres. Exam tip: keep length and width figures separate.

Alluvial deposits are the main formation base of the Northern Plains. Exam tip: connect alluvium with plain formation.