Read the following statements with reference to soil.
(i) Weathering is a very fast process of soil formation.
(ii) Percolation of water is faster in sandy soils.
(iii) Loamy soil contains only sand and clay.
(iv) Top soil contains the maximum amount of humus.
Choose the correct statements from the above.
Statements (ii) and (iv) are correct. Options (i) and (iii) are wrong. (i) Weathering is a slow process of soil formation and (iii) loamy soil consists of sand, clay and silt along with humus.