Question:

The most dominant exchangeable cation in the earth's crust

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Among basic cations in soil, Ca$^{2+}$ is usually present in the highest quantity.
  • Aluminium
  • Calcium
  • Sodium
  • Magnesium
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The Correct Option is B

Solution and Explanation

Calcium is the most dominant exchangeable cation in soils due to its abundance in minerals and its strong ability to hold onto cation exchange sites.
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