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The correctly matched indicator(s) for the given titrations is/are (A) Fe?* vs K2Cr20,: diphenylamine (B) l2 vs Thio : iodine-self indicator (C) NAHCO, vs

The correctly matched indicator(s) for the given titrations is/are (A) Fe?* vs K2Cr20,: diphenylamine (B) l2 vs Thio : iodine-self indicator (C) NAHCO, vs HCI : methyl orange (D) Oxalic acid vs KMNO4 : KMNO4 - self indicator

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