Reaction of rainwater with soluble minerals present in rocks

1. Hydration
2. Solution
3. Carbonation
4. Oxidation

This is not a measure of soil conservation

1. Afforestation
2. Check overgrazing
3. Contour ploughing
4. Denudation

Fill in the blanks:

(a) Weathering is the …………… of rocks by agents like temperature, rain, etc.

(b) Erosion is the …………… of rocks by running water.

(c) Mechanical weathering is …………… of rocks by elements of weather such as heat, frost, wind, etc.

(d) Carbonation is the reaction of …………… acid on minerals.

(e) B-Horizon of soil profile contains …………… .

Answer the following in one word:

(a) Disintegration and decomposition of rocks.

(b) A process which wears down the rocks.

(c) The breaking up of exposed rocks due to change in temperature, frost, plants, and winds.

(d) Unequal heating causes expansion in rocks resulting in breakdown of rocks.