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In the contact process for industrial ma...

In the contact process for industrial manufacture of sulphuric acid, some amount of sulphuric acid is used a starting material. Explain briefly. What is the catalyst used in the oxidation of `SO_2` ?

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RESONANCE-P BLOCK ELEMENTS-Exercise 1 part 1 subjective ques
  1. Why does H(3)PO(3) act as a reducing agent but H(3)PO(4) does not ?

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

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

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

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

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

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

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  8. Manufacture of phophoric acid from phosphorus.

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  9. Write the allotropic forms of oxygen.

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

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

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

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

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

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  15. Why concentrated H(2)SO(4) can not be used for drying H(2)?

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  16. Consider the following molecules : H(2)O H(2)S H(2) Se H(2)Te I ...

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  17. Why sulphurous acid and sulphites are reducing in nature.

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  18. Describe the action of heat on NaHSO(3)

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  19. For drying H(2)S gas concentrated H(2)SO(4) can not be used why ?

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  20. In the contact process for industrial manufacture of sulphuric acid, s...

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