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Disodium hydrogen phosphate is used to t...

Disodium hydrogen phosphate is used to test

A

`Mg^(2+)`

B

`Ca^(+2)`

C

`Na^(+)`

D

`Zn^(2+)`

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What products are formed ? When : (i)Disodium hydrogen phosphate is added to magnesium sulphate in presence of ammonium chloride and aqueous ammonia. (ii)A solution containing Zn^(2+) ions is poured in an aqueous ammonia. (iii) Bi(NO_(3))_(3) solution is mixed with KI and then resulting precipitate is heated with water. (iv)Disodium hydrogen phosphate is boiled with concentrated HNO_(3) and ammonium molybdate reagent.

Magnesium is precipitated from its salt solution as only magnesium ammonium phosphate by adding disodium hydrogen phosphate solution in absence of ammonium chloride and aqueous ammonia.

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NARAYNA-QUALITATIVE ANALYSIS-LEVEL-I(H.W)
  1. Which is most soluble in water?

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  2. A colourless salt gives violet colour to Bunsen flame and also turns m...

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  3. Disodium hydrogen phosphate is used to test

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  4. When chlorine water is added to an aqueous solution of potassium halid...

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  5. A substance on treatment with dilute H(2)SO(4) liberates a colourless ...

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  6. A white solid is first heated with dil H(2)SO(4) and then with conc. H...

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  7. Sodium borate on reaction with conc. H2 SO4 and C2 H5 OH gives a compo...

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  8. When K2 Cr2 O7 crystals are heated with conc. HCl, the gas evolved is

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  9. Which of the following gives a suffocating gas when treated with dil. ...

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  10. Brown ring test for nitrates depends on I. the ability of Fe^(2+) to...

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  11. S^(2-) and SO(3)^(2-) can be distinguished by using:

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  12. Which of the following is formed when CO(2) gas is passed through an a...

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  13. In copper turnings test, pieces of copper is added to a nitrate salt a...

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  14. An inorganic salt on reaction with dil. HCl ( or dil H(2)SO(4)) give c...

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  15. Which of the following anions gives blood red colour with neutral FeCl...

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  16. A blue colouration is not obtained when

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  17. AgCl dissolves in ammonia solution giving

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  18. A white crystalline substance dissolves in water. On passing H2 S in t...

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  19. When excess of SnCl2 is added to a solution of HgCl2, a white precipit...

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  20. Of the following sulphides which one is insoluble in dil. Acids but so...

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