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Q.

Statement-1: MgCO3 is soluble in water when a current of CO2 is passed. 

Statement-2: The solubility of MgCO3 is due to the formation of (MgCO3)2 •

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a

Statement-1 is true, Statement -2 is false.

b

Statement-1 is True, Statement-2 is True, Statement-2
is NOT a correct explanation for Statement-1

c

Statement-1 is True, Statement-2 is True; Statement-2
is a correct explanation for Statement-1

d

Statement-1 is false, Statement -2 is true.

answer is A.

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Detailed Solution

MgCO3 breaks down into magnesium oxide and carbon dioxide at high temperatures. The creation of magnesium oxide relies on this procedure. Calcinating is the name of this procedure: MgCO3MgO+CO2(ΔH=+118kJ/mol)

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