Physical Features of India

The Himalayas are young fold mountains while the Peninsular Plateau is a very old stable landmass. For exams remember the comparison of age and structure.

Antecedent rivers keep cutting old courses even after mountain uplift. For exams remember the gorges of Indus and Brahmaputra.

The Greater Himalaya has high peaks and glaciers that feed many rivers. For exams link Himadri with river sources.

Loose deposits in Shiwalik increase erosion and landslide possibility. For exams remember it as Outer Himalaya.

Dun valleys are sedimentary valleys between Shiwalik and Lesser Himalaya. For exams Dehradun is a key example.

Coarse porous deposits in Bhabar allow water to sink. For exams remember the difference between Bhabar and Terai.

The direct answer is A: groundwater reappears near the surface in Terai. In the Bhabar belt, coarse pebbles and porous material allow streams descending from the Himalayas to sink underground. Further south, the Terai has finer, less porous sediments, so this underground water rises or comes close to the surface. The result is a wet, marshy region with abundant moisture. A is correct and explains the Bhabar-to-Terai sequence. B is wrong because basaltic lava is not responsible for Terai’s marshiness. C is wrong because coral reefs are marine formations and do not explain this Himalayan foothill belt. D is wrong because permanent glaciers are found at high elevations, not in the low Terai plain. Memory cue: Bhabar absorbs water; Terai brings it back near the surface.

On gentle slopes rivers slow down and create winding and depositional features. For exams study the relation between plains and river forms.

Bhangar is older alluvium while Khadar has newer flood alluvium. For exams do not reverse this difference.

A doab is alluvial land between two rivers so it is useful for agriculture. For exams remember the meaning of Doab.

Brahmaputra carries high water and silt which can shift channels. For exams treat Majuli as a river island example.

Silt deposition in a delta divides the river into many distributaries. For exams remember the delta and deposition link.

Sundarbans is a mangrove area in a saline tidal delta. For exams remember tide salinity and mangroves together.

The Peninsular Plateau is a stable block made of ancient hard rocks. For exams treat it as older than the Himalayas.

Rivers like Chambal Betwa and Ken flow from Central Highlands toward the Ganga Yamuna system. For exams remember drainage direction.

Narmada Valley between Vindhya and Satpura indicates a rift valley. For exams see this sequence on a map.

Rivers like Godavari Krishna and Kaveri flow toward Bay of Bengal due to the eastward slope. For exams link slope and drainage.

Basaltic lava layers in Deccan Trap create step like landforms. For exams link the word Trap with step like form.

Black soil swells with moisture and shrinks on drying. For exams remember the black soil cotton and Deccan link.

The ancient rocky base of Chotanagpur is linked with minerals like coal and iron ore. For exams remember the mineral and industry link.

Meghalaya Plateau is considered a northeastern extension of the Peninsular Plateau but appears separated by plains. For exams remember Garo Khasi Jaintia.

Aravalli is an ancient mountain range eroded over a long time. For exams remember the age comparison of Aravalli and Himalaya.

Western Ghats influence both orographic rainfall and rain shadow. For exams remember windward and leeward slopes.

Rivers like Mahanadi Godavari Krishna and Kaveri cut across the Eastern Ghats. For exams remember Eastern Ghats as fragmented.

Nilgiri lies in the contact zone of Western and Eastern Ghats. For exams locate it on the mountain map of South India.