Which of the following options are correct?

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Wrought iron is a purest form of iron.

${Ca}_{3} {({PO}_{4})}_{2}$ is called Thomas slag, used as a fertilizer.

In a puddling process, ${Fe}_{2} O_{3}$ act as a oxidising agent.

${FeSiO}_{3}$ slag is formed during the extraction of Cu

answer is A.

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Detailed Solution

The purest type of iron is wrought iron. It is the purest type of iron. Because it only includes 0.12 to 0.25% carbon.

Thomas slag has the chemical formula and ${Ca}_{3} {({PO}_{4})}_{2}$ . Due to its high phosphorus content and water solubility, it is utilised as a phosphorus fertiliser.

${Fe}_{2} O_{3}$ functions as an oxidising agent since it is undergoing reduction.

When silica is combined with concentrated sulphide ore that contains iron as an impurity and fired in a reverberatory furnace.

The majority of the iron sulphide is changed into its oxide during this process, and the oxide then interacts with silica to create an iron silicate fusible slag.

Hence options a,b,c and d are correct.

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