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Disodium hydrogen phosphate is used to t...

Disodium hydrogen phosphate is used to test

A

`Mg^(2+)`

B

`Na^(+)`

C

`Ca^(2+)`

D

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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.

The percentage of P_(2)O_(5) in diammonium hydrogen phosphate is:

Iodine test is used to detect

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Millon's test is used to detect

Iodine test used to detect

NARAYNA-QUALITATIVE ANALYSIS-LEVEL -I (C.W.)
  1. The ion which is not precipitated by H2 S in the presence of HCl is

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  2. Na(2)CO(3)+KNO(3) to No reaction

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  3. Ca, Ba and Sr ions are precipitated in fifth group as their -

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  4. When H(2)S is passed through an ammonical salt solution X, a white pr...

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  5. In third group, bromine water is used to test

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  6. In the reaction : H(2)ShArr2H^(+)+S^(2-), when NH(4)OH is added, then

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  7. An aq. Solution containing Hg^(2+),Pb^(2+) and Cd^(2+) ions is mixed w...

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  8. Disodium hydrogen phosphate is used to test

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  9. Which of the following statement is // are true ?

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  10. The metal ion which is precipitated when H(2)S is passed with HCl is

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  11. The group reagent for group V radicals is

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  12. Aqua regia is

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  13. Which of the following will be precipitated when dil. HCl is added to ...

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  14. H(2)S in the presence of HCl precipitates II group but not IV group be...

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  15. A black sulphide is formed by the action of H(2)S on

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  16. The ion which can be precipitated with both HCl and H(2)S separately i...

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  17. Which of the following pairs of cations cannot be separated by using a...

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  18. Which of the following is insolublein yellow ammonium polysulphide?

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  19. The ion which is not precipitated by H2 S in the presence of HCl is

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  20. Which of the following pairs of cations cannot be separated by adding ...

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