If hardness of water sample is 200ppm, then select the incorrect statement:

Select the incorrect statement(s) :

Select incorrect statements(s)

Select incorrect statements

Select the incorrect statement about Barium

Select the incorrect statement for e-wastes

Degree of hardness of a water sample is 100ppm. If that sample contains hardness causing salt Mg(HCO_3)_2 , calculate weight of Ca(OH)_2 required for the treatment of 10kg of water sample.

How is hardness of water estimated ?

Degree of hardness of a water sample is 100ppm. 50 ml of standard soap solution is added to one kilogram of hard water sample. Calculate the degree of hardness of the resulting water sample. (one ml of soap solution is 0.001 g CaCO_3 ).