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प्रश्न
Choose the correct answer from the options given below :
Sodium zincate (Na2ZnO2) is
विकल्प
Pale blue ppt
Reddish brown ppt
Colourless
Dirty green ppt
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उत्तर
Sodium zincate (Na2ZnO2) is Colourless
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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 |
State your observation When excess sodium hydroxide is added to calcium nitrate solution
Name a solution that will separate the component of the following mixture: Zn(OH)2 from Pb(OH)2
Choose the correct answer from the options given below :
Color of ferrous ion is
Give one chemical test to distinguish between the following pair of compounds:
Iron (II) chloride solution and iron (III) chloride solution
Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
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.
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.
