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How does mouth type help in identifying the direction of Peninsular rivers?

Answer and explanation

Correct answer: Delta often indicates east flowing and estuary often indicates west flowing

Direct answer: Option A is correct. The mouth is the place where a river reaches a sea or another large water body. A delta is built by many sediment-carrying distributaries spreading outward at the mouth. In Indian geography, this is commonly associated with many east-flowing Peninsular rivers entering the Bay of Bengal. An estuary is a funnel-shaped tidal mouth where river water mixes with seawater and sediment is often carried away or not deposited into a broad delta; it is common among several west-flowing rivers entering the Arabian Sea. Thus, mouth type can provide a useful clue to flow direction, though it is not an absolute rule for every river. Option A correctly gives the broad association. Option B is wrong because a glacier does not identify eastward flow. Option C is wrong because a desert does not determine the river’s mouth direction. Option D is wrong because a volcano does not identify the Ganga system. Keep the terms separate: delta has depositing branches; estuary has a tidal, funnel-like mouth. Memory cue: delta spreads sediment; estuary opens like a funnel.

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River MouthDeltaEstuaryDirection

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