If a question gives new alluvium, flood plain and annual renewal clues, what will be the answer?

Correct answer: Khadar

The direct answer is Option C, Khadar. To solve this, first identify the clue “new alluvium.” Khadar is the newer alluvial soil found in the floodplains close to rivers. During floods, fresh layers of fine silt and other sediments are deposited over it, so its fertility is renewed from time to time. Option A, Bhabar, is a narrow pebbly belt along the Shiwalik foothills where streams often disappear underground because the porous stones allow water to sink. It is not defined by annual renewal of new flood soil. Option B, Terai, lies south of Bhabar and is a wet, marshy belt where underground streams re-emerge; it is a landscape belt, not the name for new alluvium. Option D, Bhangar, is older alluvium lying above the active floodplain. It may contain kankar and is generally less frequently renewed by floods. Thus the chain is: floodplain plus fresh deposits plus repeated renewal equals Khadar. A common mistake is to confuse Khadar with Bhangar: Khadar is new and frequently renewed, while Bhangar is old. Exam memory: “Khadar is newer; Bhangar is older.”