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Which of the following acids attack(s) o...

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

A

dilute `HNO_(3)`

B

dilute `HCl`

C

conc. `H_(2)SO_(4)`

D

aqua regia

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The correct Answer is:
A, C, 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 shows two oxidation states x and y,...

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  2. The metal oxide which decomposes on heating, is:

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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. Identify the statement which is correct for 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 d block elements 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 element is/are"

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  17. Choose correct statements (s) regarding the following reactions. Cr(...

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  18. Mercuric chloride is converted into mercury by:

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  19. What changes occur when acidified Cr(2)O(7)^(2-) ion react with H(2)O(...

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

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