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Name some ores which can be concentrate...

Name some ores which can be concentrated by magnetic separation method.

A

Pyrolusite `MnO_(2)`

B

Chromite ore `FeO*Cr_(2)O_(3)`

C

Magnetite `Fe_(3)O_(4)`

D

All of these

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AAKASH INSTITUTE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Objective type Questions (One option is correct)
  1. Which one of the following is used as an acidic flux in metallurgy ?

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  2. In the metallurgy of iron, the slag is

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  3. Name some ores which can be concentrated by magnetic separation metho...

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  4. Which of the following is commonly used to produce foam in froth float...

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  5. Which of the following is used as collector in forth floatation proces...

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  6. Galena contains ZnS with PbS (Main ore). Which of the followin is used...

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  7. Serpeck's method involves the heating of bauxite with

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  8. Sulphide ore is converted to oxide form by using the process

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  9. Which of the following oxides cannot be reduced by auto or self reduct...

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  10. Which of the following is used as reducing agent in Gold schmidt metho...

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  11. Which of the following is used to reduce TiCl(4) to Ti ?

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  12. At 1250 K 2FeO(s)to2Fe(s)+O(2)(g), DeltaG=+320kJmol^(-1) of O(2) 2...

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  13. Ellingham diagrams are plots of DeltaG(1)^(@) Vs T for the formation o...

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  14. Which of the following statement is correct w.r.t. the following graph...

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  15. In Ellingham diagrams of DeltaG oxide formation Vs T, which of the fol...

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  16. On Ellingham diagrams if two graphs intersect each other, what does th...

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  17. Which of the following is incorrect w.r.t. metallurgy of iron in the b...

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  18. Which of the following has the lowest percentage of carbon in it?

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  19. Which furnace is used for the extrction of iron from haematite ?

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  20. Roasting of sulphide ore is generally performed in

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