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Concentrated HNO(3) turns yellow is sun ...

Concentrated `HNO_(3)` turns yellow is sun light. Explain ?

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RESONANCE-P BLOCK ELEMENTS-Exercise 1 part 1 subjective ques
  1. Red phosphorus is denser, less volatile and chemically less reactive t...

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  2. NO(2) can not be dried by an alkali, why ?

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  3. Concentrated HNO(3) turns yellow is sun light. Explain ?

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  4. Nitric acid acts as an oxidising agent while nitrous acid can act both...

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  5. What products are formed when H(3)PO(2) is heated at 415 K and at 435 ...

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  6. What happens when phosphoric acid is heated ?

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  7. Why does H(3)PO(3) act as a reducing agent but H(3)PO(4) does not ?

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  8. What happens when white phosphorus is boiled with a strong solution of...

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  9. What happens when : (i) PCl(5), is heated (ii) H(3)PO(3) is heated

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  10. Why does PCl(3) fumes in air ?

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  11. Write the chemical reactions of P(4)O(6) with cold and hot water.

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  12. Mg3 N2 on reaction with water gives off NH3, but MgCl2 on reaction wit...

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  13. Write balanced equation for the following : Phosphorus is treated wi...

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  14. Manufacture of phophoric acid from phosphorus.

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  15. Write the allotropic forms of oxygen.

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  16. Explain why the liquid oxygen sticks to the magnet pole but liquid nit...

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  17. Which allotropic form of sulphur is thermodynamically stable at room t...

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  18. On moving down the group forms H(2)O to H(2)Te acidic strength increas...

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  19. What happens when one mole of per oxodisulphuric acid reacts with one ...

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  20. Out of following forms of sulphur S(8),S(6) and S(2) which one is para...

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