11. Which of the following soils is best suited for cotton ?
(a) Alluvial
(b) Red
(c) Regur
(d) Clayey
12. Which among the following soils is rather infertile ?
(a) Regur
(b) Alluvial
(c) Bangar
(d) Laterite
13. The soil which is a mixture of sand, clay and silt is known as :
(a) loamy soil
(b) sandy soil
(c) clayey soil
(d) desert soil
14. When you travel in certain parts of India, you will notice red soil. What is the main reason for this colour ?
(a) Abundance of magnesium
(b) Accumulated humus
(c) Presence of ferric oxides
(d) Abundance of Phosphates
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