Soils: Facts to remember

1. The soil most common in Indo-gangetic plains Alluvial
2. The soil which swells when wet and develops cracks when dry-- Black
3. The soil which owes its colour to oxides of iron--Laterite
4. The soil which requires least use of fertilisers--Alluvial
5. The soil which requires least tilling--Black
6. The kind of soil which is treated with gypsum to make it suitable for cropping--Alkaline soil
7. The soil which is poor in soluble salts--Laterite
8. The soil which is rich in surface accumulation of organic matter-- Peaty soil
9. The soil which is most suitable for cultivation of cotton--Black