On which coast are deltas of Peninsular rivers more common?

Correct answer: Eastern coast

The direct answer is B: the eastern coast. Many Peninsular rivers, such as the Mahanadi, Godavari, Krishna and Kaveri, flow eastward and enter the Bay of Bengal. On the broad eastern coastal plain, their flow becomes gentler and they deposit large amounts of sediment near their mouths, so deltas are common. The reasoning is: eastward flow → longer depositional lower course and suitable shallow coastal conditions → sediment accumulation → distributaries and delta formation. Option B is correct because the eastern coast has the major Peninsular river deltas. Option A, the western coast, is narrower and many rivers there are short, swift and enter the Arabian Sea through estuaries, although limited deltaic deposits can occur locally. Option C, northern coast, is not the recognised coast associated with Peninsular river deltas. Option D, desert coast, is not a standard geographical coastal category for this comparison and does not describe the main delta region. Remember: eastern coast is broad and delta-rich; western coast is narrower and more commonly associated with estuaries.