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A certain metal M ocas in four compounds...

A certain metal M ocas in four compounds namely A,B,C and D. A has 20% of M, B has 68% of M, C has 73% of M and D has 60% of M. If metal M is extracted from A,B,C and D, it costs Rs 35 per kg, Rs 40 per kg, Rs 100 per kg and Rs 45 per kg respectively. which mineral can be considered as an effective ore of M?

A

A

B

B

C

C

D

D

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-M0ck test 26-EXAMPLE
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  8. In the electrolytic reduction of pure Al2O3. Fluorspar (CaF2) is added...

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  9. During the electroytic refining of zinc, which of the following statem...

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  10. In Mac-Arthur Forrest Cyanide method, silver is extracted from the sol...

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  11. In the extraction of copper, metal is formed in the Bessemer converter...

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  12. In the extraction of iron in the blast furnace, phosphorous separates ...

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  13. Which metal is used for making dry cell ?

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  16. Hydrometallurgy method is used for the extraction of which of the foll...

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  17. Which of the following forms of iron has highest melting point ?

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  18. Consider the following reduction processes : (I) Fe2O3 + C rarr Fe ...

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  19. Which of the following statement is incorrect regarding Ellingham diag...

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