dhoran 11 arthshashtra ekam kasoti paper solution January 2022 | Std 11 Economics Ekam Kasoti 2022

Amongst the following, the total number of compounds whose equesous solution turns red litmus paper blue is: {:(NaCN,KCl,CH_(3)COONH_(4),NaH_(2)PO_(4),ZnCl_(2), Na_(3)PO_(4)),(Fe(NO_(3))_(3),Na_(2)CO_(3),NH_(4)Cl,NaHCO_(3),Na_(2)C_(2)O_(4),Na_(2)HPO_(4)):} Given: {:("Acid",ka_(1),ka_(2),ka_(3)),(H_(3)PO_(4),10^(-3),10^(-8),10^(-12)),(H_(2)CO_(3),10^(-6),10^(-11),-),(H_(2)CO_(3),10^(-2),10^(-5),-):}