Q.

Given below are two statements:

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.                 [2023]

1 Statement I is incorrect but Statement II is correct.  
2 Statement I is correct but Statement II is incorrect.  
3 Both Statement I and Statement II are incorrect.  
4 Both Statement I and Statement II are correct.  

Ans.

(3)

(I) In redox titration indicators are sensitive to change in oxidation potential.

(II) In acid-base titration, indicators are used which are sensitive to pH.