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प्रश्न
When ammonium hydroxide is added to solution B, a pale blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide to give an inky blue solution. Name the cation present in solution B. What is the probable colour of solution B?
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उत्तर
The cation present in solution B is Cu2+. The probable colour of solution B is blue.
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संबंधित प्रश्न
Choose the most appropriate answer from the following list of oxides which fit the description
[SO2, SiO2, Al2O3, MgO, CO, Na2O]
An oxide which dissolves in water forming an acid
Name
a metallic hydroxide soluble in excess of NH4OH.
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Give two examples of amphoteric hydroxides.
Name: A strong alkali
Name a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
Name a compound containing zinc in the anion.
Write the equation for the following reaction :
Zinc oxide is treated with sodium hydroxide solution.
Write balanced equation for a metal that evolves a gas which burns with a pop sound when boiled with alkali solution.
