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Which of the following give ppt. with H(...

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

A

`Co^(2+)`

B

`Pb^(2+)`

C

`Cu^(2+)`

D

`Bi^(3+)`

Text Solution

Verified by Experts

The correct Answer is:
A
Salts that gives Black precipitation with `H_(2)S` in alkaline medium is CoS, NiS.
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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 maximum number of 'S' atoms in a single plane of S(8) mole...

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

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

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

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  5. Weak dibasic acids among the following

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

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

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

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

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

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

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  12. Which of the following are amphoteric ?

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

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

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  15. Sulphuric acid can be used as:

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

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

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  18. Oxygen is not evolved when:

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

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  20. Which reagent does not give oxygen as one of the product during oxidat...

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