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Which of the following statements regard...

Which of the following statements regarding copper salts are true?

A

the colour of anhydrous `CuSO_(4)` is blue

B

"splitting of silver" can be prevented by covering the surface of molten silver with charcoal

C

Iodine liberated in a reaction can ber estimated by titration against a standard thiosulphate solution

D

Lanthanium is first electron of third transition series

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The correct Answer is:
A, B, D
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VK JAISWAL ENGLISH-d-BLOCK ELEMENTS-ONE OR MORE ANSWER IS/ARE CORRECT
  1. An element of 3d-transition series two oxidation states x and y, diffe...

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  2. The metal oxide which decomposes on heating is/are:

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  3. Which of the following acids attack(s) on copper and silver?

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  4. Which of the following statements are true for Mohr's salt?

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  5. Which of the following statement(s) is/are correct?

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  6. Roasting of copper pyrites is done:

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  7. Identify the correct statements:

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  8. Which statements about mercury are correct?

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  9. Which statements about corrosive sublimate (HgCl(2)) are correct?

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  10. Which statements are correct regarding copper sulphate?

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  11. To an acidified dichromate solution,, a pinch of Na(2)O(2) is added an...

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  12. Pick out the correct statement(s):

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  13. The species that undergoes diproportionation in an alkaline medium are...

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  14. Which of the following statements regarding copper salts are true?

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  15. Which is/are insoluble in NH(3) solution?

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  16. Order of paramagnetic character among following elements is/are:

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  17. Choose correct statement(s) regarding the following reaction: Cr(2)O...

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  18. Mercuric chloride is converted into mercury by:

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  19. What changes occur when acidified CrO(4)^(2-) ion react with H(2)O(2) ...

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  20. Choose correct statement(s) regarding the following reaction: Cr(2)O...

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