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प्रश्न
Fill in the blank.
The hydroxide which is soluble in excess of NaOH is _________ [Zn(OH)2 / Fe(OH)3 / Fe(OH)2].
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उत्तर
The hydroxide which is soluble in excess of NaOH is Zn(OH)2.
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संबंधित प्रश्न
A compound X (having the vinegar-like smell) when treated with ethanol in the presence of the acid Z, gives a compound Y which has a fruity smell.
The reaction is:

1) Identify Y and Z.
2) Write the structural formula of X.
3) Name the above reaction.
Name a weak alkali.
Name two colourless metal ions.
Name a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
Name two bases which are not alkalis but dissolves in strong alkalis.
Write balanced equation for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
Name the metal hydroxides which are soluble in caustic soda solution.
Name a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
Fill in the blank.
To distinguish soluble salts of zinc and lead ______ [NaOH / NH4OH]can be used.
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?
