Zinc blende on roasting in air gives sulphur dioxide and zinc oxide. 2ZnS+3O2→2ZnO+2SO2. Option B is correct.
Likewise, people ask, how is zinc extracted from zinc sulphide?
The extraction of zinc from zinc blende involves two steps. First, the concentrated zinc blende is converted to its oxide (by roasting). … Roasting: Zinc blende is subjected to roasting, i.e. it is heated in the presence of excess air. This converts zinc sulphide ore to zinc oxide.
Regarding this, is zinc sulphide flammable?
ICSC 1627 – ZINC SULFIDE. Not combustible. In case of fire in the surroundings, use appropriate extinguishing media. Cough.
What happened when zinc blende is roasted?
Ore of Zinc Blende is roasted in air (oxygen) to obtain Zinc Oxide.
What happens when zinc sulphide is heated?
When zinc sulphide is heated strongly in excess of air, it forms zinc oxide and sulphur dioxide gas.
What happens when zinc sulphide reacts with oxygen?
Zinc sulphide +Oxygen → Zinc oxide +Sulphur dioxide.
What is roasting name an ore which is extracted by roasting?
Roasting is the process of heating concentrated ore to a high temperature in the presence of air. The ore zinc blende is roasted in order to get zinc oxide. Example: Zinc sulphides are oxidised to zinc oxide.
When zinc sulphide is completely roasted the product formed would be?
(a) Roasting: The concentrated ore is heated with oxygen at 900°C in reverberatory furnace to convert zinc sulphide to zinc oxide. At 900°C zinc sulphate which is formed due to the oxidation of zinc sulphide also decomposes to zinc oxide.
Which among the following is a common method of extraction of zinc from ZnS?
STATEMENT-1: Extraction of zinc from sphalerite ore involves the roasting followed by reduction with coke. STATEMENT-2 : Zinc can be commercially extracted by hydrometallurgy.
Which gas is evolved during roasting of sulphide ore?
During roasting, the sulfide is converted to an oxide, and sulfur is released as sulfur dioxide, a gas.
Which gas is released during roasting of zinc ore?
In roasting reactions, the sulphide ore of the metal is treated with oxygen. This results in the formation of the corresponding oxide ore, and also releases sulphur dioxide gas. Hence, Option C is the correct option.
Which of the following metals can be extracted by Autoreduction?
Hint:Auto reduction process is a widely used industrial process of metal extraction from minerals or ores especially for less electropositive metals like copper (Cu), lead (Pb), mercury (Hg) etc.
Why are sulphide ores roasted?
Roasting is used for sulphide ores because to remove the sulphur as it gets escaped in the form of gas.