Physical Features of India

Himadri is the highest northern range and Shiwalik is the outer southern range. For exams remember the north to south order.

Many valleys and hill towns are found in the Lesser Himalaya. For exams remember the link between Himachal range and valleys.

Karakoram and Ladakh ranges are linked with India's northwestern high mountain region. For exams connect them with the Himalayan region.

Dun valleys are long, relatively narrow valleys found between Himalayan mountain ranges. In the usual Indian geography description, they lie between the Shiwalik range and the Lesser Himalaya, also called the Himachal range. They are formed in a longitudinal depression between these ranges and may contain broad valley floors with settlements and cultivation. Dehradun is the best-known example of a Dun valley.

Option A is correct because it describes their position and elongated form. They are not marine coral islands, which develop in warm shallow seas. They are also not the sandy dunes of the Thar Desert, nor black-soil lava areas of the Deccan region. The important distinction is that an ordinary river plain is generally a depositional lowland formed by river processes, whereas a Dun is a structural valley enclosed between mountain ranges.

Coarse pebble deposits in Bhabar allow water to sink down. For exams remember Bhabar as a porous belt.

The Terai is a wet, marshy belt lying south of the Bhabar region along the Himalayan foothills. In the Bhabar belt, streams carrying coarse pebbles and gravel often disappear underground because the ground is highly porous. Farther south, where the material becomes finer and less permeable, this underground water reappears near or at the surface. The high water table, gentle slope, and poor drainage produce marshy conditions in the Terai.

Therefore, option A is correct: groundwater comes near the surface. Lava deposition, coral breaking, and permanent Himalayan ice do not explain the regional wetland character of the Terai. The most useful comparison is Bhabar and Terai: water sinks into the porous Bhabar, then re-emerges in the Terai, making the latter moist and swampy. This physical transition directly explains the answer.

Northern Plains are formed by alluvial deposits of Indus Ganga and Brahmaputra systems. For exams remember the river systems.

Direct answer: Option A is correct: Bhangar and Khadar are distinguished by old and new alluvial deposits. Rivers deposit fine soil over floodplains. Older deposits remain on slightly higher terraces and are called Bhangar. Newer deposits are laid down by more recent floods on the lower floodplains and are called Khadar. Step by step: identify the material as alluvium; then ask whether it is old and relatively raised or new and flood-renewed. Bhangar is old alluvium, while Khadar is new alluvium and is generally renewed more often, making it very fertile. Option A states the exact basis. Option B is wrong because hot and cold deserts are different climatic environments. Option C is wrong because coral and volcano describe other landforms, not these river deposits. Option D is wrong because plateau and island are broad landform categories, not the distinction between Bhangar and Khadar. Memory cue: Bhangar = before/old; Khadar = newer floodplain.

Ganga and Brahmaputra deposit large amounts of silt at their mouths. For exams connect Sundarbans with this delta.

The direct answer is A, tidal marshy delta conditions. The Sundarbans lies in the Ganga–Brahmaputra–Meghna delta, where river sediments create low, wet land and tides regularly bring salty water. Mangrove plants are specially adapted to waterlogged, muddy and saline conditions. Step by step: rivers build a delta; tides flood channels and marshes; soil remains wet and often salty; mangroves survive there with special roots. Option A is correct because it gives the exact physical setting. Option B, a cold dry desert, lacks the wet tidal environment. Option C, lava flow, is volcanic material and does not describe the Sundarbans. Option D, a glacial valley, is a cold mountain landform, not a tropical delta. Therefore A is the only suitable answer. Memory cue: Sundarbans = tidal delta + mangroves.

The Peninsular Plateau is broader in the north and narrows toward the south. For exams see the map of South India.

Central Highlands lie north of Narmada and Deccan Plateau lies south of it. For exams remember the position of Narmada.

Deccan Trap formed from lava flows and black soil formed by its weathering. For exams remember cotton cultivation.

Chotanagpur Plateau is famous for ancient rocks and mineral resources. For exams remember the Jharkhand region.

Garo Khasi and Jaintia are major hills linked with the Meghalaya Plateau. For exams remember the northeastern plateau.

Aravalli is among India's very ancient and eroded ranges. For exams remember it separately from Himalaya.

Guru Shikhar is a peak in the Aravalli Range of India. It lies in the Mount Abu area of Rajasthan and is known as the highest point of the Aravalli system. Map questions often test whether a learner can connect a famous peak with its mountain range rather than with the nearby state alone. The Aravalli Range is an old, discontinuous range extending mainly across Rajasthan and toward nearby regions. Guru Shikhar is an important physical feature associated with it.

Option A is correct because Guru Shikhar belongs to the Aravalli Range. The Shiwalik is the outer Himalayan range, the Eastern Ghats lie along parts of eastern India, and Purvanchal refers to ranges in the northeast. These locations and geological settings are different. Recalling “Guru Shikhar—Mount Abu—Aravalli” gives a reliable map-based link and leads directly to the correct choice.

Purvanchal hills are found in Northeast India as bent branches of the Eastern Himalaya. For exams remember Naga Mizo Patkai.

Winds of the Arabian Sea branch strike the Western Ghats and cause rainfall. For exams remember windward slope.

Direct answer: Option A is correct. The Eastern Ghats are discontinuous because several major east-flowing rivers cut through and dissect them on their way to the Bay of Bengal. The reasoning is: the Eastern Ghats lie roughly parallel to the eastern coast; rivers such as the Mahanadi, Godavari, Krishna and Kaveri flow eastward from the interior and cross these hills; erosion and river valleys break the hills into separate sections. Therefore they do not form one continuous wall. Option A gives the correct geomorphic cause. Option B is wrong because the Eastern Ghats are on the eastern side of India, not the western coast. Option C is wrong because they are not coral islands. Option D is wrong because the Eastern Ghats are neither the Himalaya nor India’s highest Himalayan range. The important exam chain is east-flowing rivers plus erosion equals dissected or discontinuous Eastern Ghats.

Nilgiri Hills are linked with the meeting region of Western and Eastern Ghats in South India. For exams practice maps.

Anamudi is a major high peak in the Western Ghats. For exams remember Kerala and Western Ghats.

Narmada and Tapi flow westward and meet the Arabian Sea. For exams keep them separate from east flowing rivers.

Narmada flows westward through a faulted rift valley. For exams remember the special course of Narmada.

East flowing peninsular rivers deposit sediments near the Bay of Bengal. For exams remember the eastern coast.