|Consider the following statements.|
|1. Saline soils contain a larger proportion of sodium, potassium and magnesium.|
|2. Saline soils are known by different names such as reh, usar, thur and kallar etc.|
|3. Saline soils lack nitrogen and calcium.|
|4. Alkaline soils occur in arid and semi-arid regions.|
|Which of the statements given above are correct?|
A) 1 and 2
B) 2 and 3
C) 1 and 4
D) All of these
Correct Answer: D
Solution :[d] Saline soils contain a larger proportion of sodium, potassium and magnesium and thus they are infertile. Saline soils are known by different names in different areas. Saline soils lack nitrogen and calcium. Alkaline soil occur in arid and semi-arid regions and in water logged and swamgy areas.
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