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Which of the following benefication proc...

Which of the following benefication processes is used for the mineral `Al_(2)O_(3).2H_(2)O` ?

A

Froth flotation

B

Liquation

C

Leaching

D

Magnetic separation

Text Solution

Verified by Experts

The correct Answer is:
C
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Which of the following products is formed when n-heptane is passed over (Al_(2)O_(3)+Cr_(2)O_(3)) catalyst at 773K?

Which of the following cannot be used as a test for H_(2)O_(2) ?

What is the nature of Al_(2)O_(3) and B_(2)O_(3) ?

Which of the following reactions is not involved in serpeck's process of leaching of Al_2O_3 from white bauxite ore ?

For the process, H_(2)O(l) to H_(2)O(g)

In which of the following reactions H_(2)O_(2) acts as a reducing agent? 1. H_(2)O_(2)+2H^(+)+2e^(-)to2H_(2)O 2. H_(2)O_(2)-2e^(-)toO_(2)+2H^(+) 3. H_(2)O_(2)+2e^(-)to2OH^(-) 4. H_(2)O_(2)+2OH^(-)-2e^(-)toO_(2)+2H_(2)O

In which of the following reactions H_(2)O_(2) acts as reducing agent? (A) H_(2)O_(2)+2H^(+)+2e^(-) to 2H_(2)O (B) H_(2)O_(2)-2e^(-) to O_(2)+2H^(+) (C ). H_(2)O_(2)+2e^(-) to 2OH^(-) (D) H_(2)O_(2)+2OH^(-)-2e^(-) to O_(2)+2H_(2)O

Carbon reduction process is not commercially applicable for which of the following set to oxides to extract the respective metal ? (I) ZnO (II) Fe_(2)O_(3) (III) Al_(2)O_(3) (IV) SnO_(2) (V) MgO .

Which of the following set of compounds have peroxide bonds ? 1. O_(2)F_(2) " " 2. H_(2)O_(2) " " 3. H_(2)S_(2)O_(8) " " 4. CrO_(5)

Which of the following statements are correct? (a) S___S bond is present in H_(2)S_(2)O_(6) (b) In peroxosulphuric acid (H_(2)SO_(5)) sulphur is in + 6 oxidation steta (c ) Iron powder along with Al_(2)O_(3) and K_(2)O is used as a catalyst in the preparation of NH_(3) by Haber's process (d) Change in enthalpy is positive for the preparation of SO_(3) by catalytic oxidation of SO_(2)

CENGAGE CHEMISTRY ENGLISH-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Single Correcttype)
  1. Which method is not correct for refining of crude metals ?

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  2. Which of the following combination represents the correct matching of ...

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  3. Which of the following benefication processes is used for the mineral ...

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  4. Heating mixture of Cu(2)O and Cu(2)S will give

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  5. DeltaG^(Ө) vs T plot in Ellingham diagram slopes downward for the reac...

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  6. Which of the following reactions taking place in the blast furnace dur...

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  7. The ore having two different metal atoms is

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  8. Which of the following statements about the reduction is not true ?

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  9. Among the metals Cr,Fe,Mn,Ti,Ba, and Mg, the one that cannot be obtain...

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  10. By which process and is extracted from zinc blende?

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  11. Which of the following factors is of no significance for roasting sul...

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  12. The incorrect statement among the following is

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  13. Auto-reduction process is used for the extraction of :

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  14. Bauxide ore is made up of Al(2)O(3) + SiO(2) + TiO(2) + Fe(2) O(3). Th...

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

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  16. Native silver metel froms a water solube, complex with a dilute aqueou...

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

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  18. The incorrect statement is

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  19. Composition of malachite mineral is

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  20. Select the correct statement

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