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प्रश्न
Sodium hydroxide solution is added first in a small quantity, then in excess to the aqueous salt solutions of copper (II) sulphate, zinc nitrate, lead nitrate, calcium chloride and iron (III) sulphate. Copy the following table and write the colour of the precipitate in (i) to (v) and the nature of the precipiatate (soluble or insoluble) in (vi) to (x)
| Aqueous salt Solution | Colour of Participitate when NaOH is added in a samll quantity | Nature of precipitate(soluble or insoluble) when NaOH added in excess |
| Copper (II) Solution | ||
| Zinc nitrate | ||
| Lead nitrate | ||
| Calcium chloride | ||
| Iron(III) sulphate |
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उत्तर
| Aqueous salt Solution | Colour of Participitate when NaOH is added in a samll quantity | Nature of precipitate(soluble or insoluble) when NaOH added in excess |
| Copper (II) Solution | Blue | Insoluble |
| Zinc nitrate | White | Soluble |
| Lead nitrate | White | Soluble |
| Calcium chloride | White | Sparingly soluble |
| Iron(III) sulphate | Reddish Brown | Insoluble |
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संबंधित प्रश्न
State your observations when barium chloride solution is mixed with sodium sulphate solution.
Name a solution that will separate the component of the following mixture: CaO from PbO
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Only zinc hydroxide
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Write a balanced equation for the following conversion:
\[\ce{CuSO4 ->[A]Cu(OH)2 ->[B] [Cu(NH3)4]SO4}\]
A given white crystalline salt was tested as follows:
A flame test on the salt gave a persistent golden-yellow colourisation. What conclusions can be drawn for the observation?
When an ammonium salt is warmed with sodium hydroxide solution, a gas is evolved. State three ways in which you could identify this gas.
The hydroxide soluble in excess of ammonium hydroxide is ______.
Write a balanced equation of a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
An amphoteric oxide.
