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Brown colour of HNO3 can be removed by.....

Brown colour of `HNO_3` can be removed by....

A

adding Mg powder.

B

passing air through warm acid.

C

passing `NH_3` through acid.

D

boiling the acid

Text Solution

Verified by Experts

The correct Answer is:
B
passing air through warm acid.
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KUMAR PRAKASHAN-THE P-BLOCK ELEMENTS -SECTION-E (MULTIPLE CHOICE QUESTIONS (MCQS)) (DARPAN.S EXAM ORIENTED MCQS)
  1. The correct order of oxidizing nature of Ocl^(-), Obr^(-) and Ol^(-) ...

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  2. The correct order of melting points of group-15 trifluorides is .........

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  3. Brown colour of HNO3 can be removed by....

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  4. When a zinc reacts with very dilute nitric acid it produces .............

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  5. Which reagent can be used to distinguish O(3) and H2O2 ?

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  6. Ozone reacts with K4[Fe(CN)6] to form ..........

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  7. The number of S - O bonds in H(2)S(2)O(8)……….

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  8. Which of the following statements about oxide of phosphorus is not cor...

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  9. Which of the following reacts with AsF(3) in liquid BrF(3)?

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  10. For a reaction: HX(aq) + H2O <implies H(3)O(aq)^(+) + X(aq)^(-). The...

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  11. Which of the following on heating gives mixture of SO2 and SO3 ?

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  12. When an alkali metal fluoride are dissolved in XeF4, the anion X is fo...

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  13. Which of the following is least stable ?

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  14. When an alkali metal hydroxide is reacted with ozone, a dark red colou...

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  15. Consider the following reactions of water : (i) 2H(2)O + Ca to Ca^(2...

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  16. Amongst the following oxoacids of phosphorus, which oxoacids has phosp...

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  17. Which of the following compounds with H2SO4 will act as an acid ?

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  18. Which of the following compounds will not undergo hydrolysis ?

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  19. The correct order of acidic strength of oxo acids of phosphorus is ......

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  20. The compound having S - S single bond is ..........

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