MCQ
Among the following compounds, the increasing order of their basic strength is


- ✓$(I) < (II) < (IV) < (III)$
- B$(I) < (II) < (III) < (IV)$
- C$(II) < (I) < (IV) < (III)$
- D$(II) < (I) < (III) < (IV)$


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$(Ca = 40,\,P = 31,\,O = 16)$
Statement $I:$- In redox titration, the indicators used are sensitive to change in $pH$ of the solution.
Statement $II:$- In acid-base titration, the indicators used are sensitive to change in oxidation potential.
In the light of the above statements, choose the most appropriate answer from the options given below