Name the chief ores of tin, iron and aluminium. What methods are employed for the concentration/purification of their ores?

Solution

(i) The chief ore of tin is cassiterite (SnO₂). It is crushed and then concentrated by hydraulic washing. Tungstate of iron and manganese present are removed by magnetic process.

(ii) The chief ore of iron is haematite (Fe₂O₃). It is crushed and then concentrated by hydraulic washing.

(iii) The chief ore of aluminium is bauxite AlOx(OH)3-2x [where 0 < x < 1] . It is concentrated by leaching method.

Some More Questions From General Principles And Processes of Isolation Of Elements Chapter

Which of the ores mentioned in Table 6.1. could be concentrated by magnetic separation method?
Table 6.1 Principal ores of some important metal.

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General Principles And Processes Of Isolation Of Elements

Name the chief ores of tin, iron and aluminium. What methods are employed for the concentration/purification of their ores?

Some More Questions From General Principles And Processes of Isolation Of Elements Chapter

Which of the ores mentioned in Table 6.1. could be concentrated by magnetic separation method?
Table 6.1 Principal ores of some important metal.

What is the significance of leaching in the extraction of aluminium?

Is it true that under certain conditions. Mg can reduce Al₂O₃and Al can reduce MgO? What are those conditions?

What is the role of depressant in froth floatation process?

Titanium is a metal of modern times. It is obtained as oxide. Why it could not be extracted earlier despite its wide occurence?

Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?

What criterion is followed for the selection of the stationary phase in chromatography?

What is the role of cryolite in the metallurgy of aluminium?

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General Principles And Processes Of Isolation Of Elements

Name the chief ores of tin, iron and aluminium. What methods are employed for the concentration/purification of their ores?

Some More Questions From General Principles And Processes of Isolation Of Elements Chapter

Which of the ores mentioned in Table 6.1. could be concentrated by magnetic separation method?Table 6.1 Principal ores of some important metal.

What is the significance of leaching in the extraction of aluminium?

Is it true that under certain conditions. Mg can reduce Al2O3 and Al can reduce MgO? What are those conditions?

What is the role of depressant in froth floatation process?

Titanium is a metal of modern times. It is obtained as oxide. Why it could not be extracted earlier despite its wide occurence?

Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?

What criterion is followed for the selection of the stationary phase in chromatography?

What is the role of cryolite in the metallurgy of aluminium?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Which of the ores mentioned in Table 6.1. could be concentrated by magnetic separation method?
Table 6.1 Principal ores of some important metal.

Is it true that under certain conditions. Mg can reduce Al₂O₃and Al can reduce MgO? What are those conditions?