Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Chemistry Equilibrium
Phenolphthalein is not suitable indicator for the titration between ________ and _______.
1
NaOH ; CH3COOH
2
Oxalic acid; acidified KMnO4
3
NaOH ; HCl
4
More than one of the above
5
None of the above