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Select correct statement:...

Select correct statement:

A

The decomposition of an oxide into oxygen and metal vapour entropy increases.

B

Decomposition of an oxide is an endothermic change.

C

To make `Delta G^@` negative, temperature should be high enough so that `T Delta S^@ gt Delta H^@`

D

All are correct statements.

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The correct Answer is:
D

All are correct statements.
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DISHA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE -1: CONCEPT APPLICATOR
  1. Consider the following reaction at 1000^(@)C (A) Zn (s) + (1)/(2) O...

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  2. Correct match is:

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  3. Select correct statement:

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  4. By which process Pb and Sn are extracted respectively are:

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  5. Which of the following faction is of no significance for roasting sul...

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

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  7. Sulphide ores of metals are usually concentrated by both floatation pr...

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  8. Calcination is the process in which

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  9. Extraction of zinc from zinc blende is achieved by

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  10. In froth flotation process many chemicals (frother, collector, activat...

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  11. In the metallurgy of Zn the Zn dust obtained from roasting and reducti...

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  12. A sulphide ore is first converted into its oxide before reduction. Thi...

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  13. Carbon and CO gas are used to reduce which of the following pairs of m...

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  14. While extracting an element from its ore, the ore is grind and leached...

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  15. Consider the following statements - In the aluminothermite process,...

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  16. Which statement is correct?

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  17. Aluminium is prepared in large quantities by

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  18. The incorrect statement among the following is

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  19. Select the property which forms the basis of hydrometallurgical proces...

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  20. which of the following electronts is present as the impurity to the m...

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