General Studies and Mental Ability
Direction Sense Clockwise — Remember "NEWS" clockwise starting from top: N(top), E(right), S(bottom), W(left). For 45° angles: NE, SE, SW, NW. Shadow falls opposite to sun: morning shadow→West, evening shadow→East.
Divisibility by 11 Quick Check — Alternate sum method: Add digits in odd positions, add digits in even positions, subtract both sums. If result is 0 or divisible by 11, original number is divisible by 11.
Calendar Day Formula Anchor — Remember: 1-Jan-2000 was Saturday. For quick calculations, any year's Jan 1st: add (year code + leap years passed) mod 7. Code repeats every 400 years.
Latitude-Longitude Memory — Lat-itude = Flat-itude (horizontal lines). Longitude = Long lines (vertical). Equator = 0° Lat. Prime Meridian = 0° Long. India roughly 8°N to 37°N, 68°E to 97°E.
Geography of India
India's Neighbors Clockwise — "BMAPNCSB" starting from Northwest: Bangladesh, Myanmar, Afghanistan, Pakistan, Nepal, China, Sri Lanka, Bhutan. Maritime: Maldives, Indonesia (Andaman proximity).
Western Ghats States — "MAGKKT": Maharashtra, Andaman? No—Gujarat, Goa, Karnataka, Kerala, Tamil Nadu. Actual: Gujarat-Maharashtra-Goa-Karnataka-Kerala-TN (6 states, south to north).
Major Soil Types Five — "ALBUMS": Alluvial, Laterite, Black (Regur), Urban? No—Mountain, Sandy/Desert, Red-Yellow. Common: Alluvial (40% area), Black cotton, Red, Laterite, Desert.
Indian Monsoon Onset — Southwest monsoon hits Kerala around June 1 (±week). Progresses NE covering India by mid-July. Retreats from NW Rajasthan around September 1. NE monsoon: Oct-Dec (winter), affects TN/AP coast.
Economic Geography
Green Revolution States — "HARYANA-Punjab-UP" were primary beneficiaries (1960s-70s). High-Yielding Variety (HYV) seeds, wheat-rice focus. Norman Borlaug = father. Remember: Green=Cereals, White=Milk, Blue=Fish, Yellow=Oilseeds revolutions.
Top Coffee Producers Trio — "KTK": Karnataka (70%), Tamil Nadu, Kerala. Arabica in hills, Robusta in plains. Karnataka's Coorg/Chikmagalur = coffee heartland. India ranks 6th globally.
Major Ports East-West — East: (Kolkata-Visakhapatnam-Paradip-Ennore-Chennai). West: (Kandla-Mumbai-JNPT-Mormugao-New Mangalore-Cochin). 13 major ports total including one in Andaman (Port Blair).