Which option gives the correct match of Bhangar and Khadar?

Correct answer: Bhangar old alluvium and Khadar new alluvium

Bhangar is the older alluvium of the Northern Plains, generally found on relatively higher parts of the floodplain. Khadar is the newer alluvium deposited repeatedly by rivers, so it is usually more fertile. Option C also expresses the old–new alluvium distinction and is therefore too close in meaning to B; the standard textbook match is given in option B. Exam tip: remember Bhangar as old alluvium and Khadar as new alluvium.