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3. Write the name of the reactions given below.
a. Iron displaces copper from copper sulphate solution
b. Precipitation and neutralisation reactions
c. Carbon burns in oxygen and produces carbon dioxide
d. Calcium carbonate when heated gives carbon
dioxide and calcium oxide
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Explanation:
a. This reaction is called displacement reaction in which the reactive element Iron, Fe has displaced less reactive Copper from its solution, The chemical equation can be written as: Fe+CuSO4→Cu+FeSO4.
b. They are a part of Double - Displacement Reactions.
c. combustion reaction
d. Calcium carbonate decomposes, on heating , to form calcium oxide and carbon dioxide. When 10 g of calcium carbonate is decomposed completely, then `5.6 g` of calcium of oxide is formed
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