Which of the following statement(s) is/are corect

1.	Which of the following statement(s) is/are corect
Answer» Water equalies the strength of `NAOH, KoH,CsOH` and `Ba(OH)_(2)` Relative Strengthof acids `HClO_(4), H_(2)SO_(4),HNO_(3)HI` etc. is determied by taking them in `CH_(3)COOH` Relative strength of bases like `NaOH, Ba(OH)_(2),CaOH` and `KOH` can be determined by taking them in `H_(2)O` `H_(3)BO_(3)`is a weak LEWIS acid but not a Bronsted acid Solution :pH range (working range) foranacid indicator is `pK_(a) +- 1, :. pK_(a) = 5` If indicator is `50%` ionized, then `["Hin"] = ["In"^(-)]` `:. pH = pK_("In"), pK_(a) = 10^(-5)`

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