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Which of the following oxides is/are amp...

Which of the following oxides is/are amphoteric ?

A

`Na_(2)O`

B

CaO

C

`Al_(2)O_3`

D

`SnO_2`

Text Solution

Verified by Experts

The correct Answer is:
C, D
`Al_(2)O_(3)` and `SnO_2` are amphoteric in nature .
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DINESH PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-SELECTED STRAIGHT OBJECTIVE TYPE MCQS
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  2. The major role of fluorpar (CaF2 ) which added in small quantities in ...

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  3. Which of the following oxides is/are amphoteric ?

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  4. Extraction of metal from the ore cassiterite involves

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  5. The carbon-based reduction method is not used in the extraction of

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  6. In the metallurgical processes, aluminium acts as

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  7. Hydrogen will not reduce

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  8. Froth floatation process may be used to increase the concentration of ...

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  9. In which of the following mineral aluminium is not present ?

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  10. An important ore of magensium is

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  11. Among the following statements the incoorect one is

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  12. In the commercial electrochemical process for aluminium extraction, th...

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  13. Which of the following process is used in the extractive metallurgy of...

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  14. Pb and Sn are extracted from their chief ore by

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  15. Which of the following ores is best concentrated by froth floatation m...

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  16. During electrolytic refining of copper, some metals present as impurit...

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

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  18. Sulphide ores of metals are usually concentrated by froth floatation p...

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  20. Extraction of zinc blende is achieved by

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