Chemistry

Give reasons for the following:
Roasting the ore generally results in evolution of sulphur dioxide gas, while calcination of the ore evolves carbon dioxide gas.

Metallurgy

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Answer

Generally, sulphide ores are roasted, so SO₂ is given off. Calcination is carried on carbonates and hydrated ores , so CO₂ or water vapours is given off.

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Chemistry

Give reasons for the following:
Roasting the ore generally results in evolution of sulphur dioxide gas, while calcination of the ore evolves carbon dioxide gas.

Metallurgy

Answer

Related Questions

Give reasons for the following:
Conversion of concentrated ore to it's oxide is an essential step in the extraction of metals from the ore, even then the step is not necessary in the metallurgy of aluminium.

Give reasons for the following:
Roasting of the concentrated ore is carried out in the presence of excess air, while calcination of the concentrated ore in the absence or limited supply of air.

Give reasons for the following:
Reduction of metallic oxides to metal in the extraction of metals from the ores is based on the position of the metal in the activity series.

Give reasons for the following:
Oxides or halides of highly electropositive metals e.g. K, Na, Ca, Al are reduced to metals by electrolysis and not by reduction with coke.

Chemistry

Give reasons for the following:Roasting the ore generally results in evolution of sulphur dioxide gas, while calcination of the ore evolves carbon dioxide gas.

Metallurgy

Answer

Related Questions

Give reasons for the following:Conversion of concentrated ore to it's oxide is an essential step in the extraction of metals from the ore, even then the step is not necessary in the metallurgy of aluminium.

Give reasons for the following:Roasting of the concentrated ore is carried out in the presence of excess air, while calcination of the concentrated ore in the absence or limited supply of air.

Give reasons for the following:Reduction of metallic oxides to metal in the extraction of metals from the ores is based on the position of the metal in the activity series.

Give reasons for the following:Oxides or halides of highly electropositive metals e.g. K, Na, Ca, Al are reduced to metals by electrolysis and not by reduction with coke.

Give reasons for the following:
Roasting the ore generally results in evolution of sulphur dioxide gas, while calcination of the ore evolves carbon dioxide gas.

Give reasons for the following:
Conversion of concentrated ore to it's oxide is an essential step in the extraction of metals from the ore, even then the step is not necessary in the metallurgy of aluminium.

Give reasons for the following:
Roasting of the concentrated ore is carried out in the presence of excess air, while calcination of the concentrated ore in the absence or limited supply of air.

Give reasons for the following:
Reduction of metallic oxides to metal in the extraction of metals from the ores is based on the position of the metal in the activity series.

Give reasons for the following:
Oxides or halides of highly electropositive metals e.g. K, Na, Ca, Al are reduced to metals by electrolysis and not by reduction with coke.