Question

give reason - Soil predominated by Granite is red in colour

Answer 1

Because it consists iron as its constituent.

Answer 2

Red soil is a type of soil that develops in a warm, temperate, moist climate having thin organic layer. The parent material is granite rock and the colour is red due to the presence of iron oxide which occurs as haematite and when it occurs in hydrated form it becomes limonite which is yellow in colour.