14 Which one of the following ions is not in Evian a Ca2 b M

14. Which one of the following ions is not in Evian
a. Ca2+
b. Mg2+
c. HCO3- (Incorrect)
d. SO42-
e. NO2-
f. NO3-

Solution

Evian contains all the ions such as Ca²⁺, Mg²⁺, HCO₃^-, SO₄^2- and NO₃^-. The ion which is not present in Evian is NO₂^-