AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
(B) Old alluvial soil with higher concentration of kanker nodules
The textbook explicitly states: "According to their age alluvial soils can be classified as old alluvial (Bangar) and new alluvial (Khadar). The bangar soil has higher concentration of kanker nodules than the Khadar." Option B matches this definition exactly. Do not confuse Bangar (old, more kanker nodules, less fertile) with Khadar (new, finer particles, more fertile).