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प्रश्न
You are given a mixture of precipitated copper hydroxide and zinc hydroxide. Name a solvent which will dissolve:
Only copper hydroxide
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उत्तर
Addition of KCN
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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 |
Choose the correct answer from the options given below :
Color of ferrous ion is
Choose the correct answer from the options given below :
Which one is colourless anion?
You are given three white powders-calcium carbonate, lead carbonate and zinc carbonate. Describe the tests you would carry out in solution, to identify the metal ion in each of the above compounds. Indicate clearly how you would prepare the solutions for the tests.
Sodium hydroxide solution is added to solution A. A white precipitate is formed which is insoluble in excess sodium hydroxide solution. What is the metal ion present in solution A?
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 balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
Which of the following about oxides is correct?
Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
