JEE Main 20198 Apr, Morning shiftChemistryMediumHydrogen84× since 2003
100 mL of a water sample contains 0.81 g of calcium bicrabonate and 0.73 g of magnesium
bicarbonate. The hardness of this water sample expressed in terms of equivalents of CaCO₃ is :
(Molar mass of calcium bicarbonate is 162 g mol^–1 and magnesium bicarbonate is 146 g mol^–1)