Does the reactivity of a metal and form of its ore(oxides, sulphides, chlorides, carbonates, sulphates) has any relation with process of extraction?

The extraction of metals from oxide ores involve

Classify the following ores as oxides, sulphides, chlorides, carbonates and sulphates and write their formulae. Bauxite, Copper Iron Pyrites, Zine Blende, Magnesite, Epsom salt, Horn Silver, Pyrolusite, Haematite, Zincite, Rock salt, Cinnabar, Magnetite, Galena, Gypsum, Limestone, Carnallite.

The process of extraction of metals from their ore is called.

Give reasons (a) Platinum, gold and silver are used to make jewellery. (b) Sodium, potassium and lithium are stored under oil. (c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. (d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.

The formula of a metal oxide Is MO. Then write the formula of its chloride.

On exposure to air, alkali metals get tarnished due to formation of oxides, hydroxides and carbonates on their surface. When heated in air or oxygen they burn vigorously forming different types of oxides depending upon the nature of the metal. The formation and stability of these metals can be explained on the basis of size of alkali metal ion and the anion. Peroxides are colourless, while superoxides are coloured. The normal oxides are basic while peoxides and superoxides act as oxidising agents Na_(2)O_(2) has light yellow colour. This is due to

On exposure to air, alkali metals get tarnished due to formation of oxides, hydroxides and carbonates on their surface. When heated in air or oxygen they burn vigorously forming different types of oxides depending upon the nature of the metal. The formation and stability of these metals can be explained on the basis of size of alkali metal ion and the anion. Peroxides are colourless, while superoxides are coloured. The normal oxides are basic while peoxides and superoxides act as oxidising agents On heating in excess of oxygen, lithium gives

Magnesium is an active metal. If it occurs as a chloride in nature, which method of reduction is suitable for its extraction?

If the formula of carbonate of a metal M is M_2CO_3 then the formula of its chloride is ____

Aluminium is stable in air and water inspite of the fact that it is reactive metal. The reason is that a thin film of its oxide, if formed on its surface which makes it passive for further attack. The layer is so useful that in industry, it is purposely deposited by an electrolytric process called anodizing. Reaction of aluminium with oxygen is highyl exothermic and is called thermite reaction 2Al(s)+(3)/(2)O_(2)(g)rarr Al_(2)O_(3)(s), Delta H=-1670 kJ Thermite reaction finds applications in the metallurgical extraction of many metals from their oxides and for welding of metals. The drawback is that to start the reaction, high temperature is required for which an ignition mixture is used. Thermite mixture used for welding is