Why a turmeric stain on my white shirt is turned to red when it is washed with soap.

A turmeric stain on a white shirt turns red when washed with soap due to the basic nature of the soap solution.

Here’s a brief explanation:

• Turmeric acts as a natural indicator.
• In a basic solution, turmeric changes from yellow to red.

Soap solutions are typically basic, causing this colour change.