In thermite welding a mixture of __________ and __________ is ignited with a burning magnesium ribbon which produces molten iron metal as large amount of heat is evolved
(a) iron (III) oxide and aluminium powder
(b) iron (II) oxide and aluminium powder
(c) iron (III) chloride and aluminium powder
(d) iron (III) sulphate and aluminium powder
Correct Answer: (a) iron (III) oxide and aluminium powder
Explanation: In thermite welding, a mixture of iron (III) oxide and aluminium powder is ignited with a burning magnesium ribbon which produces molten iron metal as a large amount of heat is evolved.
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