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Nitric acid usually turns yellow on stan...

Nitric acid usually turns yellow on standing.This is due to

A

absorption of yellow wavelength

B

slow decomposition of `HNO_(3)` into `NO_(2)`

C

its oxidation by atmospheric air

D

absorption of moisture by it

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The correct Answer is:
B
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RESONANCE ENGLISH-P BLOCK ELEMENTS-Exercise 1 part 2 objective que
  1. The mass of 3 mole of electron is:

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  2. Cold solution of barium nitrite on mixing with sulphuric acid produces...

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  3. Nitric acid usually turns yellow on standing.This is due to

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  4. Concentrated nitric acid oxidises phosphours (P) into:

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  5. Which of the following metals does not dissolve in concentrated HNO(3)...

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  6. The compound which has molecular nature is gas phase but ionic in soli...

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  7. When P(4)O(10) is dissolved in water, the acid formed finally is :

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  8. The substance used as a fast drying agent in the laboratory is:

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  9. Metaphosphoric acid exists in polymeric form and may have :

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  10. On heating ammonium dichromate, the gas evolved is :

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  11. One mole of calcium phosphide on reaction with excess of water gives

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  12. Which statement is not correct for nitrogen?

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  13. Nitrogen is obtained by the thermal decomposition of :

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  14. Nitrogen gas is prepared :

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  15. Which of the following compound is a tribasic acid ?

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  16. Which one has the lowest boiling point ?

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  17. The compound which on strong heating gives oxygen is :

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  18. Ozone layer is being depleted. This is due to :

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  19. A considerable part of the harmful ultraviolet radiation of the sun do...

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  20. Estimation of ozone can be made quantitatively by :

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