<prompt> If hardness level of water is 50-150 mgL, the water is defined as -SoftModerately hardFlardVery hard  <response>: Ans. is b i.e., Moderately hard Classification of hardness in waterClassificationLevel of hardness mEq.litrea Soft waterb Moderately hardc Hard waterd Very hard waterLess than 1 50 mgL1 - 3 50 - 150 mgL3 - 6 150 - 300 mgLOver 6 300 mgL 