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प्रश्न
Give the preparation of the salt shown in the left column by matching with the methods given in the right column. Write a balanced equation for each preparation.
| Salt | Method of preparation |
| Zinc Sulphate | Precipitation |
| Ferrous sulphide | Oxidation |
| Barium Sulphate | Displacement |
| Ferric sulphate | Neutralisation |
| Sodium sulphate | Synthesis |
उत्तर
Zinc Sulphate – Displacement
\[\ce{Zn + H2SO4 -> ZnSO4 + H2\uparrow}\]
Ferrous sulphide – Synthesis
\[\ce{Fe + S ->[\Delta] FeS}\]
Barium sulphate – Precipitation
\[\ce{BaCl2 + H2SO4 -> BaSO4\downarrow + 2HCl}\]
Ferric sulphate – Oxidation
\[\ce{4FeO + O2 -> 2Fe2O3}\]
Sodium sulphate – Neutralisation
\[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2\uparrow}\]
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संबंधित प्रश्न
How is the following salt prepared:
Calcium sulphate from calcium carbonate,
How is the following salt prepared:
Lead carbonate from lead nitrate.
How is the following salt prepared:
Sodium nitrate from sodium hydroxide.
How is the following salt prepared:
Copper (II) sulphate from copper (II) oxide?
Explain why It is necessary to find out the ration of reactants required in the preparation of sodium sulphate.
The diagram given below is to prepare iron (III) chloride in the laboratory.
(i) What is substance B?
(ii) What is the purpose of B?
(iii)Why is iron (III) chloride to be stored in a closed container?
(iv) Write the equation for the reaction between iron and chloride ?
Match the salts given in Column I with their method of preparation given in Column II:
| Column I | Column II | ||
| (i) | Pb(NO3)2 from PbO | (a) | Simple displacement |
| (ii) | MgCl2 from Mg | (b) | Titration |
| (iii) | FeCl3 from Fe | (c) | Neutralization |
| (iv) | NaNO3 from NaOH | (d) | Precipitation |
| (v) | ZnCO3 from ZnSO4 | (e) | Combination |
Mention the colour change observed when the following indicator is added:
| Solution | Acids | Alkalies |
| Alkaline phenolphthalein solution |
You are provided with the following chemicals:
NaOH, Na2CO3, H2O, Zn(OH)2, CO2, HCI, Fe, H2SO4, CI2, Zn.
Using the suitable chemicals from the given list only, state briefly how you would prepare sodium sulphate.
Choose the most appropriate answer from
(SO2, SiO2, Al2O3, CO, MgO, Na2O)
An oxide which when dissolved in water form acid.
