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प्रश्न
Give a chemical test to distinguish between the given pair of chemicals:
Lead nitrate solution and zinc nitrate solution.
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उत्तर
When NaOH is added to each of the compounds, lead nitrate forms a chalky white precipitate of lead hydroxide [Pb(OH)2], whereas a gelatinous white precipitate of zinc hydroxide [Zn(OH)2] is formed in the case of zinc nitrate.
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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 amphoteric oxide
What do you observe when caustic soda solution is added to the following solution: first a little and then in excess : ZnSO4
Name: A strong alkali
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Name the chloride of a metal which is soluble in excess of ammonium hydroxide.
Name : A yellow monoxide that dissolves in hot and concentrated caustic alkali.
Fill in the blank.
The hydroxide which is soluble in excess of NaOH is _________ [Zn(OH)2 / Fe(OH)3 / Fe(OH)2].
Fill in the blank.
The substance/s which react with hot conc. NaOH solution and undergoes a neutralization reaction ______ [Al2O3 / Al / Al(OH)3]
What do you see when sodium hydroxide solution is added to zinc sulphate solution, till it is in excess?
Write balanced equations for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
