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Write the balanced chemical equations for the following reactions and identify the type of reaction in each case.
(a) Thermit reaction, iron (III) oxide reacts with aluminium and gives molten iron and aluminium oxide.
(b) Magnesium ribbon is burnt in an atmosphere of nitrogen gas to form solid magnesium nitride.
(c) Chlorine gas is passed in an aqueous potassium iodide solution to form potassium chloride solution and solid iodine.
(d) Ethanol is burnt in air to form carbon dioxide, water and releases heat.

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(a) Fe2O3(s) + 2Al(s) ⎯→ Al2O3(s) + 2Fe(l) + Heat
Displacement reaction/Redox reaction
(b) 3Mg(s) + N2(g) ⎯→ Mg3N2(s)
Combination reaction
(c) 2KI(aq) +Cl2(g) ⎯→ 2KCl(aq) + I2(s)
Displacement reaction
(d) C2H5OH(l) + 3O2(g) ⎯→ 2CO2(g) + 3H2O(l) + Heat
Redox reaction/Combustion reaction

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