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प्रश्न
The hydroxide soluble in excess of ammonium hydroxide is ______.
विकल्प
Zinc hydroxide
Lead hydroxide
Magnesium hydroxide
Ferrous hydroxide
उत्तर
The hydroxide soluble in excess of ammonium hydroxide is Zinc hydroxide.
APPEARS IN
संबंधित प्रश्न
Match the salts given in Column I with their method of preparation given in Column II
| Column I | Column II | ||
| 1 | Pb(NO3)2 from PbO | A | Simple displacement |
| 2 | MgCl2 from Mg | B | Titration |
| 3 | FeCl3 from Fe | C | Neutralization |
| 4 | NaNO3 from NaOH | D | Precipitation |
| 5 | ZnCO3 from ZnSO4 | E | Combination |
Name a solution that will separate the component of the following mixture: Zn(OH)2 from Pb(OH)2
You are given a mixture of precipitated copper hydroxide and zinc hydroxide. Name a solvent which will dissolve:
Only copper hydroxide
You are given a mixture of precipitated copper hydroxide and zinc hydroxide. Name a solvent which will dissolve:
Only zinc hydroxide
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 |
State the colour of the residue formed when nitrates of :
1. Calcium
2. Zinc
3. Lead
4. Copper are strongly heat
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.
Which of the following about oxides is correct?
Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
