The Northern Plains

The Northern Plains are formed by alluvial deposits of the Indus Ganga and Brahmaputra river systems. Exam tip: connect river deposits with plain formation.

The Northern Plains are made of alluvial soil and are very fertile. Exam tip: link alluvial soil with the Northern Plains.

The Northern Plains extend south of the Himalayas. Exam tip: remember the location of the Himalayas and Northern Plains together.

The Northern Plains form a vast flat region in North India. Exam tip: identify the fertile plain of North India.

The Northern Plains are broad, level areas formed mainly by sediments brought and deposited by rivers. Their surface is generally flat or gently sloping, which makes them suitable for farming, transport, and the growth of large settlements. A plain is identified by its relatively even land, unlike a mountain or a rocky plateau. Thus, the basic physical description of the Northern Plains is very flat land.

Option A is correct because it directly describes the usual relief of this region. A rocky and peaked surface would suggest mountains, while an island-like form would be surrounded by sea. A lava plateau would be associated with volcanic rock and a different type of landform. Therefore, the correct choice is A, “Very flat.” The word “generally” is important because small variations in height can occur, but the overall landscape remains a wide plain.

Alluvial soil made by river deposits makes the Northern Plains fertile. Exam tip: remember alluvial soil as the reason for fertility.

The Northern Plains are useful for agriculture due to fertile soil and water availability. Exam tip: connect them with farming.

The Northern Plains are divided into Punjab Plains Ganga Plains and Brahmaputra Plains. Exam tip: remember the three main parts.

The Punjab Plains are linked with deposits of the Indus and its tributaries. Exam tip: connect Punjab Plains with the Indus system.

The Ganga Plains are formed by deposits of the Ganga and its tributaries. Exam tip: understand Ganga Plains as fertile alluvial plains.

The Brahmaputra Plain is mainly found in Assam. Exam tip: connect the Brahmaputra Plain with Assam.

The direct answer is A: Bhabar is the narrow, pebbly belt found along the foothills and south of the Shiwalik range. Himalayan rivers carry coarse pebbles and boulders from the mountains. When the slope becomes gentler near the Shiwalik foothills, this material is deposited, and streams often disappear into the porous ground. Farther south, the water may reappear in the finer Terai belt. Option A is correct because Bhabar is directly associated with the Shiwalik foothills. Option B is wrong because the Deccan Plateau is a separate peninsular landform. Option C is wrong because Lakshadweep is an island group in the Arabian Sea. Option D is wrong because the Eastern Coast is a coastal plain, not the Bhabar belt. Memory cue: Shiwalik above, Bhabar below, Terai farther south.

The Bhabar is a narrow belt found along the foothills of the Shiwalik range. Rivers descending from the mountains lose some of their speed and deposit large, coarse materials such as pebbles, gravel, and stones there. These deposits leave many spaces between the particles, so the belt is porous and much of the stream water disappears underground. This combination of coarse material and porosity is the main identifying feature of Bhabar.

Option A is correct because “pebbly deposits” describes the coarse sediments of this belt. Coral islands are marine landforms, black lava soil is associated with basaltic regions, and sand barchans are crescent-shaped dunes formed by wind in dry areas. None of these explains the foothill belt called Bhabar. Remember that water commonly reappears farther south in the Terai, where finer sediments make the ground wetter. Thus, the correct choice is A.

Water goes underground in the porous pebbly surface of Bhabar. Exam tip: identify Bhabar by disappearing streams.

The direct answer is B: south. The Himalayan foothill belt is commonly arranged from north to south as Bhabar, Terai, older alluvial plains and other plain regions. Bhabar is a narrow, coarse, porous zone where streams may disappear underground. Immediately south of it lies Terai, where those streams re-emerge and the land becomes wet, marshy and more humid. Therefore the Terai is south of Bhabar. A, north, reverses the accepted sequence. C, in the middle of the sea, is impossible because both are land regions along the foothills. D, western island, is not a directional or geographical description of Terai and has no connection with Bhabar. Thus B is correct. Memory cue: remember the sequence “Bhabar first, Terai next” while moving south from the Himalayan foothills.

The Terai is a narrow, wet belt along the southern side of the Bhabar region, near the foothills of the Himalayas. In the porous Bhabar belt, streams often disappear into the coarse sediments. Farther south, these streams re-emerge and the ground becomes waterlogged, producing the marshy and humid Terai. Its wet conditions distinguish it from dry deserts, sandy areas, coral islands, and volcanic mountains.

Option A is correct because a wet and marshy region is the main geographical feature of the Terai. Option C describes a dry environment, which is the opposite of the Terai. Options B and D name unrelated landforms: coral islands are coastal or marine features, while volcanic mountains are formed by volcanic activity. The useful location clue is that Terai lies south of Bhabar in the Himalayan foothill zone.

Bhangar consists of older alluvial deposits found on terraces above the floodplains of rivers in the Northern Plains. It often contains calcareous concretions called kankar. Newer alluvium is called Khadar and is deposited in active floodplains. Exam tip: remember Bhangar = old alluvium and Khadar = new alluvium.

The direct answer is B: new alluvium. Khadar is the name given to newer river deposits in the Northern Plains. Rivers continuously carry and spread silt, sand and clay during floods, and these recent deposits form Khadar. Because new material can be added regularly, Khadar is generally lower and more fertile than older alluvium. A, old alluvium, is called Bhangar, not Khadar. C, sandy lava, is incorrect because lava comes from volcanic activity and is not ordinary river alluvium. D, pebbly mountain, is not a soil or alluvium category; it describes neither the material nor the plain region. Therefore B is the only suitable answer. Memory cue: “Khadar is fresh”; “Bhangar is old.”

Direct answer: Option A is correct. Bhangar is the older alluvial terrace of the Northern Plains. Since it is old, its deposits have had time to develop nodules or concentrations of calcium carbonate called kankar. These kankar deposits are a standard identifying feature of Bhangar. Option A works because it connects old alluvium with kankar. Option B is wrong because coral rocks form mainly through marine organisms in warm shallow seas, not as the normal deposit of Bhangar. Option C is wrong because “sea salt mountains” are not a recognised characteristic of this inland alluvial surface. Option D is wrong because lava islands are volcanic features formed by erupted magma, whereas Bhangar is formed by river sediments. A useful comparison is that Khadar is newer, lower and regularly renewed by floods, while Bhangar is older, relatively higher and may contain kankar. Do not treat every plain deposit as the same: age and material matter. Memory cue: “Bhangar is old, so kankar can be told.”

Khadar is formed by new alluvial deposits, so it is considered fertile. Exam tip: connect Khadar with farming.

Bhabar Terai Bhangar and Khadar are subdivisions of the Northern Plains. Exam tip: link them with plains, not mountains.

The width of the Northern Plains is considered about 240 to 320 kilometres. Exam tip: remember length and width separately.

Fertile soil and water availability increase settlement in the Northern Plains. Exam tip: understand the link between fertility and population.

The Ganga Plain is considered to extend between the Ghaggar and Teesta rivers. Exam tip: remember its boundary through river clues.

Answer: A, Doab. The word ‘Doab’ comes from two words meaning ‘two’ and ‘water’ or ‘rivers’. In geography, it describes the tract of land lying between two rivers, especially in the alluvial Punjab Plains. Rivers deposit fine sediments on their floodplains, and the land between neighbouring rivers may become suitable for farming. A is correct because it exactly names this inter-river region. B, Dun, is a longitudinal valley lying between Himalayan ranges, so it is not land between two rivers. C, a delta, forms where a river deposits sediments near its mouth, often in a branching pattern; it is not defined by two rivers. D, a barchan, is a crescent-shaped sand dune formed by wind in dry areas. Memory cue: ‘two rivers = doab’; do not confuse a doab with a delta.