Exams › SSC CGL (Prelims) › General

Which of the following best distinguishes a delta from an estuary?

1. Delta forms by river deposition; estuary by tidal action
2. Delta has deep channels only
3. Estuary always has freshwater only
4. Delta forms only in deserts

Correct answer: Delta forms by river deposition; estuary by tidal action

Solution

A delta is formed when a river deposits sediments at its mouth, creating a fan-shaped landform. An estuary is a tidal mouth of a river where seawater mixes with freshwater, so tidal action is the key distinction.

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