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When impurity in metal can easily be oxi...

When impurity in metal can easily be oxidised than metal itself, then most suitable method for purification of metal is

A

Poling

B

Cupellation

C

Liquation

D

Zone refining

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AAKASH INSTITUTE-TEST 2-EXERCISE
  1. Consider the following ores: Haematite, Magnetite, Siderite, Iron pyri...

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  2. Which is not self reducing throughout the metallurgical process?

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  3. When impurity in metal can easily be oxidised than metal itself, then ...

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  4. Which of the following can be extracted by thermite process?

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  5. Select the incorrect match.

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  6. Which of the following is most stable oxidation state of manganese?

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  7. Which of the following exhibits only one type of lattice structure?

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  8. Which of the following carbide is not possible with Lanthanides (Ln)?

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  9. Consider the following conversion CrO4^(-2) ⇋ Cr^(+3) find n factor...

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  10. Least acidic among following is

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  11. Potassium dichromate reacts with potassium iodide in acidic medium. Wh...

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  12. Which of the following does not have dπ - pπ bond?

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  13. Titration of KMnO4 in acidic medium is not satisfactory in presence of

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  14. The lanthanide which do not exhibit +2 oxidation state is

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  15. Which is not a bidentate ligand?

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  16. Which of the following is a coordination compound?

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  17. 0.1 mole of CrCl3.4NH3 reacts with excess of AgNO3 solution then 0.1 ...

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  18. Effective atomic number of chromium in [Cr(NH3)6]Cl3 complex is

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  19. Total number of stereoisomers in [Co(en)2Br2]^+ complex are

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  20. Which is outer orbital complex?

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