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The composition of aqua-regia is...

The composition of aqua-regia is 

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3 vol. of conc. HCl & 1 vol. of conc. `HNO_(3)`
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DINESH PUBLICATION-THE P-BLOCK ELEMENTS -Problems For Practice
  1. Which oxide of nitrogen is coloured ?

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  2. Which of the following is a nitric acid anhydride?

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  3. The composition of aqua-regia is

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  4. Name one metal which becomes passive in conc. HNO(3).

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  5. Which oxide of nitrogen is paramagnetic and coloured ?

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  6. What are the neutral oxides of nitrogen?

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  7. Name the product when zinc is reacted with very dilute HNO(3) acid.

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  8. Name the product when iodine is heated with concentrated HNO(3).

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  9. Name the compound of N with oxidation state -3 " and " +2.

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  10. Identify the group 15 elements (s) which correspond to the following d...

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  11. In the ring test for NO(3)^(-) ion, what is the chemical formula of th...

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  12. Which oxide of nitrogen becomes brown when released in air ?

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  13. What are the shapes of PH(3) molecule and PH(4)^(+) ion ?

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  14. What is the maximum oxidation state shown by nitrogen in its compounds...

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  15. What is the nature of N^(3-) ion ?

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  16. Apart from N(2)O which other colourless gas supports combustion ?

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  17. What is the nature of the following reaction ? P(4)+3NaOH+3H(2)O to ...

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  18. How many (P-O) bonds are present in (i) P(4)O(6) (ii) P(4)O(10) ?

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  19. Out of O(2) " and " O(3) which is a better oxidising agent ?

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  20. What is the shape of ozone molecule ?

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