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Question

Thomas slag is


A

CaSiO3

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B

Ca4(PO4)2O

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C

CaCO3

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D

MnSiO3

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Solution

The correct option is B

Ca4(PO4)2O


Explanation for correct option:

Option B. Ca4(PO4)2O

Thomas slag:

  • The tetra calcium phosphate is known as Thomas slag.
  • The chemical formula of Thomas slag is Ca4(PO4)2O .
  • It is used as a phosphorus fertilizer because it is soluble in water and contains a high amount of phosphorus.
  • The phosphorus fertilizer is beneficial for the growth of roots of the plants.

Explanation for incorrect options:

Option A. Wollastonite is mineral CaSiO3 composed of calcium inosilicate mineral that may contain small amounts of iron, magnesium, and manganese substituting for calcium.

Option C. Calcium carbonate has a molecular formula CaCO3 that is found in the mineral rock known as calcite. It is also known as limestone.

Option D. MnSiO3 is a low-temperature high-pressure, dimorph of rhodonite and is known as Pyroxmangite.

Hence, the correct option is B. Thomas slag is Ca4(PO4)2O.


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