If 1 kg of water contains 12 mili grams of `MgSO_4`then the degree of hardness of water is

A 50 ppm
B 60 ppm
C12 ppm
D10 ppm

If water contains 10 ppm of MgCl_2 and 8 ppm of CaSO_4 , calculate the ppm of CaCO_3 .

A sample of hard water contains 1 mg CaCl_2 and 1 mg MgCl_2 per litre. Calculate the hardness of water in terms of CaCO_3 present in per 10^(6) parts of water. (a). 2.5 ppm (b). 1.95 ppm (c). 2.15 ppm (d). 195 ppm

Determine degree of hardness in term of ppm of CaCO_3 of 10^(-3) molar MgSO_4 (aq).

Determine degree of hardness in term of ppm of CaCO_3 of 10^(-3) molar MgSO_4 (aq).

B.O.D values of four samples of water A,B,C and D are given below A 160 ppm B 35 ppm C 180 ppm D 25 ppm

One litre of a sample of hard water contain 4.44mg CaCl_(2) and 1.9mg "of" MgCl_(2) . What is the total hardness in terms of ppm of CaCO_(3)?

If BOD value of water is 20 ppm then what can we conclude regarding water ?

A water is said to be soft water if it produces sufficient foam with the soap and water that does not produce foam with soap is known as hard water. Hardness has been classified into two types (i)Temporary hardness (ii) Permanent hardness. Temporary hardness is due to presence of calcium and magnesium bicarbonate. It is simply removed by boiling as Ca(HCO_(3))_(2)overset(Delta)rarr CaCO_(3)darr+CO_(2)uarr+H_(2)O Mg(HCO_(3))_(2)overset(Delta)rarr MgCO_(3)darr+CO_(2)uarr+H_(2)O temporary hardness can also be removed by addition of slaked lime, Ca(OH)_(2) Ca(HCO_(3))_(2)+Ca(OH)_(2) to 2CaCO_(3)darr+2H_(2)O permanent hardsness is due to presencce of sulphates and chlorides of Ca,Mg,etc. It is removed by washing soda as CaCl_(2)+Na_(2)CO_(3) to CaCO_(3)darr+2NaCl CaSO(4)+Na_(2)CO_(3)to CaCO_(3)darr+Na_(2)SO_(4) Permanent hardness also removed by ion exchange resin process as 2RH+Ca^(2+)toR_(2)Ca+2H^(+) 2ROH+SO_(4)^(2-) to R_(2)SO_(4)+2OH^(-) The degree of hardness of water is measured in terms of PPm of CaCO_(3) 100 PPm means 100 g of CaCO_(3) is present in 10^(6) g of H_(2)O . If any other water sample which contain 120 PPm of MgSO_(4) , hardness in terms of CaCO_(3) is equal to =100 PPm. One litre of a sample of hard water (d=1 g/mL) cotains 136 mg of CaSO_(4) and 190 mg of MgCl_(2) . What is the total hardness of water in terms of CaCO_(3) ?

A sample of hard water is found to contain 50mg of CaSO_4 in 12kg of sample.Calculate the hardness of the sample in terms of ppm of CaSO_4 .

One litre of sample of hard water contain 4.44mg CaCI_2 and 1.9mg of MgCI_2 . What is the total hardness in terms of ppm of CaCO_3 ?