Consider the following metallurgical processes :
(I) Heating impure metal with CO and distilling the resulting volatile carbonyl (b.p. 43°C) and finally decomposition at 150°-200°C to get the pure

Question

Consider the following metallurgical processes :
(I) Heating impure metal with CO and distilling the resulting volatile carbonyl (b.p. 43°C) and finally decomposition at 150°-200°C to get the pure metal
(II) Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged metal sulphide
(III) Electrolysis of the molten electrolyte containing approximately equal amounts of the metal chloride and NaCl to obtained the metal
The processes used for obtaining magnesium, nickel and copper are respectively :

Prashant Kotian · Accepted Answer

Correct answer: C. Step 1: Thermite is a pyrotechnic composition of metal powder and metal oxide. Step 2: The most common and classic thermite mixture consists of Aluminium (Al) powder as the fuel and Iron(III) oxide (Fe2O3) as the oxidizer in a 1:3 stoichiometric ratio. Step 3: Consequently, thermite is a mixture of Al powder and Fe2O3, matching option (b).

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