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प्रश्न
How will you distinguish between the two black samples, CuO and MnO2 with a chemical test?
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उत्तर
Add concentrated hydrochloric acid to both the samples. Only MnO2 releases greenish yellow chlorine gas.
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संबंधित प्रश्न
State your observations when Dilute Hydrochloric acid is added to Copper carbonate
State your observations when Dilute Hydrochloric acid is added to Sodium thiosulphate.
Give a chemical test to distinguish between the given pairs of chemicals:
Sodium chloride solution and Sodium nitrate solution
Explain why dilute hydrochloric acid cannot be concentrated by boiling beyond 22.2%.
Name the following:
A metallic oxide which reacts with hydrochloric acid to give a coloured solution.
Write balanced equcation for the following reaction:
Manganese (IV) oxide and concentrated hydrochloric acid.
Write a fully balanced of the following case :
Magnesium metal is treated with dilute hydrochloric acid.
Write the balanced equation for the reaction of dilute hydrochloric acid with the following:
Magnesium sulphite
Write observation:
A small piece of zinc is added to dilute hydrochloric acid.
State which of the two - a solution of HCl in water or in toluene is an electrolyte. Explain.
