(a) Formed by the weathering of crystalline rocks.

(b) Found in Tamil Nadu, Karnataka, Goa and Orissa.

(c) Main characteristics are:

(i) Red in color due to presence of iron compounds.

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(ii) Colour varies from chocolate brown to yellow.

(iii) Deficient in nitrogen, lime, phosphoric acid and humus.

(iv) The soil becomes productive with the use of fertilisers.

(d) Crops grown are: Rice, sugar cane, wheat, pulses can be grown with irrigation and addition of fertilisers.