Geography: India's Physical Setting, Resources, and Karnataka
What the Geography section tests
Questions test India's physical setting, climate, soils, vegetation, agriculture, minerals, industries, transport, and population, plus Karnataka's regional geography. Expect data interpretation and cause-effect explanations rather than isolated names.
Core rules
- The monsoon is a seasonal reversal: the southwest monsoon (June–September) gives most of India's rain; the northeast monsoon (October–December) waters Tamil Nadu and coastal Andhra.
- Soil–crop matching: black soil (regur) retains moisture and suits cotton; alluvial soil suits rice, wheat, and sugarcane; red soil suits millets and pulses; laterite suits cashew, tea, and coffee.
- Industry location follows raw material, power, transport, market, and labour; iron and steel clusters near coal and iron-ore belts.
- Karnataka: the Western Ghats divide the coastal lowland from the Deccan plateau; the Malnad receives heavy rain, the Maidan is drier; major rivers include the Krishna, Tungabhadra, and Cauvery.
Worked example
A state has 30 million people and an area of 150,000 km². Find its density and judge it by Indian standards. Density = 30,000,000 ÷ 150,000 = 200 persons/km². India's 2011 average is about 382 persons/km², so 200 is below average but not sparse. Show the division, give the unit, and compare with the national figure rather than an invented threshold.
Traps
Reversing monsoon directions; calling black soil poor for cotton; confusing the largest producer with the largest reserve; mixing Malnad and Maidan; giving a number without units.