Where is the Bhangar area generally found in the Northern Plains?

Correct answer: In slightly higher older alluvial parts away from river banks

The direct answer is B: Bhangar is found in slightly higher, older alluvial parts away from the active river bank. The Northern Plains contain river-deposited alluvium. Bhangar is the older alluvium, usually lying above the level of regular floods; it may contain calcareous concretions called kankar. Khadar, by contrast, is newer alluvium deposited frequently in the lower floodplain. Step by step: older deposits remain on relatively raised land; newer flood deposits occupy the low belt near the river; therefore the description in B matches Bhangar. Option A describes the new flood belt, which is Khadar, not Bhangar. Option C is wrong because Bhangar is a landform of the alluvial plains, not the sea. Option D is wrong because it is not restricted to coral islands. Thus B is correct. Exam cue: Bhangar = old and higher; Khadar = new and lower floodplain.