Physical Features of India

Anamudi is the highest peak of Peninsular India located in Western Ghats. For exams remember Kerala and Western Ghats.

Eastern Himalaya bends in Northeast India and forms Purvanchal hills. For exams remember Patkai Naga Mizo.

Narmada and Tapi flow west into Arabian Sea and are linked with rift valleys. For exams keep them separate from east flowing rivers.

The eastern coast is broad and large rivers deposit silt near Bay of Bengal. For exams remember Godavari Krishna Kaveri.

The western coastal plain is narrow and rivers are short so large deltas are fewer. For exams compare eastern and western coasts.

Konkan Kannad and Malabar are north to south parts of the western coastal plain. For exams remember the order.

Both are parts of the eastern coastal plain and linked with Bay of Bengal. For exams identify the eastern coast.

The direct answer is D: wind deposition of sand. A barchan is a crescent-shaped sand dune. In a desert, rainfall is scarce, vegetation is limited, and loose sand lies on the ground. Moving air lifts, rolls, and pushes these sand particles. When wind speed decreases or an obstacle interrupts the movement, the sand is deposited. Repeated deposition builds a dune; stronger, fairly steady winds shape it into a crescent, with its horns pointing downwind. Therefore the landform is evidence of wind action, specifically deposition. Option A, river-mouth deposition, occurs where a river enters a sea or lake and forms a delta, not a barchan. Option B, glacial erosion, is produced by moving ice and creates features such as U-shaped valleys, not desert dunes. Option C, coral growth, is a marine biological process that builds reefs in warm shallow seas and has no connection with loose desert sand. Option D is correct because wind both transports and deposits sand to form barchans. Memory cue: barchan contains the idea of a desert sand dune; connect it with wind.

Luni is a river linked with dry western Rajasthan and does not form a clear marine delta. For exams remember inland drainage.

The direct answer is B. The Rann of Kachchh is a low-lying saline region that experiences seasonal waterlogging. During the wet season, water spreads over parts of the surface. In the hot, dry season, strong evaporation removes the water, but dissolved salts remain behind and crystallise as a white layer. Step by step: seasonal water covers the plain; evaporation dries the water; salt is left and deposited; the surface appears white and saline. Option A is wrong because permanent snow is not responsible in this hot lowland. Option B is correct because it gives both essential processes: evaporation and salt deposition after seasonal waterlogging. Option C is wrong because basaltic lava would produce volcanic rock, not a seasonal salt crust. Option D is wrong because coral reefs are marine biological structures and do not explain the inland saline surface. Exam cue: Rann means salt-covered seasonal plain in this context.

Ladakh is cold and dry due to altitude and rain shadow. For exams remember the cause of cold desert.

Lakshadweep is a marine coral island group while Deccan Trap is a lava plateau. For exams remember the origin difference.

Barren Island is an active volcanic site in the Andaman Nicobar region. For exams link it with Andaman.

Majuli is a river island in Brahmaputra while Barren is a volcanic island of Andaman. For exams keep island types separate.

Indira Point is in Nicobar while Kanyakumari is on the mainland. For exams remember island and mainland difference.

Palk Strait is a shallow sea passage between Tamil Nadu and Sri Lanka. For exams identify it on the map.

Khasi Hills force moist winds upward and cause heavy rainfall. For exams link Meghalaya with orographic rainfall.

Himalayan rivers show more perennial flow while many peninsular rivers are seasonal. For exams remember source comparison.

Coastal plains are useful for ports due to sea contact and flat land. For exams remember coast and trade relation.

The eastern coast has deltas of large rivers and the western coast is narrow due to nearby Western Ghats. For exams remember coastal comparison.

Bhabar is a porous pebbly foothill belt of the Himalayas not a marine marsh. For exams keep Bhabar and Sundarbans separate.

Sundarbans is the tidal saline mangrove area of the Ganga Brahmaputra Delta. For exams identify this clue quickly.

Narmada flows westward through a rift valley into Arabian Sea. For exams remember Narmada Tapi as special west flowing rivers.

The Himalayas are young fold mountains while the Peninsular Plateau is an ancient stable landmass. For exams remember this basic comparison.

Himalayas and Peninsular Plateau show a major difference in geological age and structure of India. For exams remember the difference between young mountains and ancient plateau.