Question

Name the type of water stored in the soil in the form of hydrated oxides of iron, silicon, and aluminium?

(a) Gravitational water

(b) Capillary water

(c) Hygroscopic water

(d) Chemically bound water

I had been asked this question in an internship interview.

Origin of the question is Environment in division Ecology of Life Sciences

Answer 1

The correct answer is (d) Chemically bound water

To explain I would say: Chemically bound water is not available for the plants as it is present in the form of hydrated oxides of iron, silicon, and aluminium.