Question

What is colour change when a stain of curry on a white cloth comes in contact with soap and why

Answer 1

The colour of the stain will change from yellow to red. It is due the basic nature of soap while turmeric in curry is acidic in nature.Neutralisation reaction takes place and hence colour change is observed

Answer 2

Answer:

It contains turmeric. Turmeric is an indicator which gives red colour with a base since soap is a base so we get red colour.