Different water samples A, B, C and D have 150 ppm each of CaCl_2, MgSO_4, CaSO_4, and MgCl_2 respectively. The order of degree of hardness of these samples is

Different water samples A, B, C and D have 150 ppm each of CaCl_2, MgS

1.	Different water samples A, B, C and D have 150 ppm each of CaCl_2, MgSO_4, CaSO_4, and MgCl_2 respectively. The order of degree of hardness of these samples is
Answer» `D GT A gt B gt C` `A gt B gt C gt D` `C gt B gt A gt D` `C gt A gt D B` ANSWER :A