c
\((c)\) For a compound to give \(NaHCO_3\) test positive, it must be more acidic than \(H_2CO_3\) \((pKa = 6.4)\)
And for a compound to give \(NaOH\) test positive, it must be more acidic than \(H_2O\) \((pKa = 15.7)\)
For \(NaHCO_3\) as well as by \(NaOH\)
