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Aqua regia is...

Aqua regia is

A

`Conc. HNO_3 + 2 conc. HCl`

B

`Conc. HNO_3 + 3 conc. HCl`

C

`Conc. HNO_3 + NO_2`

D

`Conc.HNO_3 + conc. H_2 SO_4`

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The correct Answer is:
B
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CENGAGE CHEMISTRY-P-BLOCK GROUP 15 ELEMENTS - THE NITROGEN FAMILY-Exercises (Single Correct)
  1. The reaction between NH2^(Ө) and N2 O gives

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  2. Red phosphorus is less reactive than yellow phosphorus because

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  3. Aqua regia is

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  4. The number of steps, in which orthophosphoric acid is ionised, are

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  5. Phosphorous is usually extracted from

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  6. PCl5 is kept in well stopered bottles because

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  7. The BCl3 is a polar molecule whereas NCl3 is pyramidal because

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  8. N2 forms NCl3 whereas P can form both PCl3 and PCl5. Why ?

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  9. Cl-P-Cl bond angles in PCl5 molecule are

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  10. Hyarolysis of NCl3 gives NH3 and X. Which of the following is X ?

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  11. Chlorine reacts with excess of ammonia to form.

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  12. The following are some statements related to group 15 hydrides. (i) ...

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  13. The atomicity of phosphorus is X and the P-P-P bond angle is Y. What a...

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  14. The reaction of P with X leads selectively to P4 O6. X is

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  15. Atoms in P4 molecule of white phosphorus are arranged regularly in the...

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  16. Phosphine, acetylene and ammonia can be formed by treating water with

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  17. The cyanide ion CN and N(2) are isoelectronic, but in contrast to CN^(...

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  18. Nitrogen forms N(2) but phosphorous when forms P(2) gets readily conve...

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  19. In NO(3)^(-) ion, the number of bond pair and lone pair of electrons o...

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  20. Blue liquid which is formed at - 30^@ C by mixing of two gases is.

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