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प्रश्न
State the colour of the residue formed when nitrates of :
1. Calcium
2. Zinc
3. Lead
4. Copper are strongly heat
उत्तर
1. Calcium : White
2. Zinc : White
3. Lead : Orangish red
4. Copper are strongly heat : black
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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 |
Name a solution that will separate the component of the following mixture: Zn(OH)2 from Pb(OH)2
Name a solution that will separate the component of the following mixture: CaO from PbO
Choose the correct answer from the options given below :
Color of ferrous ion is
What will you observe when barium chloride solution is added to iron(II) sulphate solution.
Give one chemical test to distinguish between the following pair of compounds:
Zinc sulphate solution and Zinc chloride solution.
Give the balanced equations for the reaction with two different amphoteric oxides with a caustic alkali.
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 metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
