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When compared , deltaG^(o) for the forma...

When compared , `deltaG^(o)` for the formation of `Al_(2)O_3` ,the `deltaG^(o)` for the formation of `Cr_(2)O_3` is

A

same

B

unpredicted

C

higher

D

lower

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The correct Answer is:
C
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DINESH PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-REVISION QUESTIONS FROM COMPETITIVE EXAMS.
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  2. The magnetic ore is

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  3. When compared , deltaG^(o) for the formation of Al(2)O3 ,the deltaG^(o...

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  4. Which metal has a greater tendency to form metal oxide

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  5. Identify the reaction that does not take place in a blast furnace

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  6. Which one of the following ores is treated by chemical leaching

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  7. Auto reduction is employed in the metallurgy of

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  8. The ore that is concentrated by froth floatation process is

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  9. In aluminium extraction by Bayer process, alumina is extracted from ba...

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  10. Bauxite is made up of Al(2)O3 + SiO2 + TiO2 + Fe(2)O3 . This ore is tr...

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  11. When copper pyrites is roasted in excess of air, a mixture of CuO + ...

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  12. Bauxite ore is made up of Al(2)O3 + SiO2 + TiO2 + Fe(2)O3 . This ore ...

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  13. The auto reduction process is not used in the metallurgy of

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  14. The incorrect statement among the following is

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  15. Which of the following is used in thermine welding ?

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  16. Which of the following methods is used for obtaining Aluminium metal ?

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  17. According to Ellinigliam diagram, the oxidation reaction of carbon to ...

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  18. In the equation , 4M + 8CN^(-) + 2H(2)O + O rarr 4[M(CN)2]^(-) + 4OH^(...

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  19. Oxidation states of the metal in the mineral haematite and magnetite ,...

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  20. Which of the following does not occur as sulphide ore. ?

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