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Which of the following forms black ppt. ...

Which of the following forms black ppt. with `H_(2)S` in acidified solution?

A

`Mg^(2+)`

B

`Na^(+)`

C

`Cd^(2+)`

D

`Zn^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
B
Sulphides of salts gives Black ppt in acidic medium are HgS, CuS, PbS, `Na_(2)S` etc.
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AAKASH SERIES-VIA GROUP ELEMENTS-LEVEL-II LECTURE SHEET (EXERCISE-I Single & One or More than One Correct Answers)
  1. What is the difference in maximum atomicity of oxygen and sulphur?

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  2. What is the maximum number of 'S' atoms in a single plane of S(8) mole...

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  3. Which of the following forms black ppt. with H(2)S in acidified soluti...

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  4. Which of the following give ppt. with H(2)S only in alkaline medium?

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  5. H(2)S is more volatile than water because

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  6. Weak dibasic acids among the following

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  7. SOCl(2) can act as Lewis acid as well as Lewis base because

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  8. In presence of moisture, SO(2) can

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  9. SO(2) is obtained when the following are heated in air

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  10. In the reaction PbO(2)+SO(2) to PbSO(4)

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  11. A gas X turns line water milky. The milkiness disappears if excess of ...

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  12. In which of the following reactions, SO(2) acts as an oxidising agent?

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  13. Which of the following are amphoteric ?

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  14. Which of the following statement(s) is (are) correct ?

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  15. Which of the following statement(s) is (are) true for SO(2) ?

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  16. Sulphuric acid can be used as:

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  17. Which of the following ions give ppt. with BaCl(2) solution?

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  18. Which of the following gases can be collected by downward displacemen...

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  19. Oxygen is not evolved when:

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  20. In the reaction H(2)S+O(3) to ………. the products are:

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