Question Detail
Question
In a thioglycollate medium, which indicator is often incorporated to show the oxidation-reduction potential, appearing colorless under reduced conditions?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Slide 18, 'CLASSIFICATION BASED ON FUNCTIONAL USE OR APPLICATION CONT'D,' specifies, 'Methylene blue or resazurin is an oxidation-reduction potential indicator that is incorporated in the thioglycollate medium. Under reduced condition, methylene blue is colourless.'
Hint
This indicator changes color based on the presence or absence of oxygen.