The Luni River is mainly associated with which state?

Correct answer: Rajasthan

The direct answer is D, Rajasthan. The Luni River is mainly associated with the dry desert region of Rajasthan. A river’s association with a state is understood from the area through which it flows and the drainage conditions found there. Luni rises in the Aravalli region and flows through the arid parts of Rajasthan. Because rainfall is low and evaporation is high, its water does not normally form a large perennial river reaching the sea; it may end in a marshy or sandy area. Option A, Kerala, is incorrect because Kerala has short, west-flowing rivers and a humid climate, not the desert drainage setting of Luni. Option B, Assam, is incorrect because Assam is associated with the Brahmaputra and heavy monsoon rainfall. Option C, Punjab, is incorrect because Punjab is associated mainly with the Indus river system and its tributaries. Option D is correct because Luni is the best-known river of Rajasthan’s desert and inland drainage region. The main concept is that inland drainage means water may disappear into sand or a lake instead of reaching the sea. Remember: Luni means Rajasthan’s arid, inland-drainage river. Do not select a state merely because it has rivers; match the river with its physical region.