MCQs covering Indian physical geography, climate, natural resources, and world geography for UPSC CSE Prelims GS Paper I. All questions follow the UPSC Prelims pattern with detailed explanations.
Geography accounts for 10–15 questions in UPSC Prelims. Indian physical geography (rivers, climate, soils) and world geography (ocean currents, tectonic activity, climate zones) are both tested.
These mock tests cover the complete Geography syllabus for UPSC CSE Prelims — Indian physical geography, natural resources, and world geography with UPSC-pattern MCQs.
India has two major river systems: (1) Himalayan Rivers — perennial, glacier-fed: Indus system (Indus, Jhelum, Chenab, Ravi, Beas, Sutlej), Ganga system (Ganga, Yamuna, Ghaghra, Gandak, Kosi), and Brahmaputra; (2) Peninsular Rivers — mostly rain-fed, seasonal: East-flowing (Mahanadi, Godavari, Krishna, Cauvery — drain into Bay of Bengal) and West-flowing (Narmada, Tapi — drain into Arabian Sea). UPSC frequently asks about tributaries, river basins, and the difference between consequent and subsequent rivers.
India has six major soil types: (1) Alluvial Soil — most widespread, found in Indo-Gangetic Plain, fertile, good for wheat and rice; (2) Black Soil (Regur) — Deccan Plateau, rich in clay, retains moisture, ideal for cotton; (3) Red and Yellow Soil — Deccan plateau periphery, low fertility due to iron oxide; (4) Laterite Soil — high rainfall regions (Kerala, Karnataka, NE India), acidic, suited for tea, coffee, rubber; (5) Arid and Desert Soil — Rajasthan, low organic matter; (6) Forest and Mountain Soil — Himalayan and hilly areas. Black cotton soil and alluvial soil are most frequently tested.
Important ocean currents: Warm currents — Gulf Stream (North Atlantic), North Atlantic Drift (moderates Europe's climate), Kuroshio (North Pacific), Agulhas (off South Africa); Cold currents — Labrador Current (North Atlantic, fog off Newfoundland), Canaries Current (NE Atlantic), Humboldt/Peru Current (South America, causes deserts on coast), Benguela (South Africa), California Current (NE Pacific). Key concept: Cold currents cause arid conditions on adjacent coasts (Atacama, Namib deserts); Warm currents moderate coastal climates (Western Europe). The Coriolis effect makes currents clockwise in Northern Hemisphere and counter-clockwise in Southern Hemisphere.
The Indian Monsoon is driven by differential heating between land and sea. In summer, the Indian subcontinent heats faster than the Indian Ocean, creating a low-pressure zone over land. Moisture-laden south-westerly winds from the Indian Ocean rush in to fill this low pressure — this is the South-West Monsoon (June–September). The monsoon enters via two branches: (1) Arabian Sea branch — hits the Western Ghats, enters through Kerala by ~June 1; (2) Bay of Bengal branch — enters through NE India. The North-East Monsoon (October–December) brings rain to Tamil Nadu and SE coast as winds reverse. El Niño (warming of Central Pacific) typically weakens Indian monsoon.