Question

Statement (I): Single superphosphate, double superphosphate, triple superphosphate are mono-calcium phosphate.
Statement (II): Mono calcium phosphates are water soluble and thus have high leaching losses.

• A. Both Statement (I) and Statement (II) are true.
• B. Both Statement (I) and Statement (II) are false.
• C. Statement (I) is true but Statement (II) is false.
• D. Statement (I) is false but Statement (II) is true.

Hint:

Mono-calcium phosphate forms are water-soluble, effective fertilizers, but can leach easily.

Answer 1

The Correct Option is A

Step 1: Single, double and triple superphosphate all contain phosphorus as monocalcium phosphate, so Statement (I) is true.
Step 2: Monocalcium phosphate dissolves readily in water.
Step 3: High water solubility means it leaches down the profile easily, so Statement (II) is true.
Step 4: Both statements are correct, so option 1 is the answer.