Question

when soap is scrubbed on a stain of curry on white cloth ,why does it became reddish brown ,and turns yellow again when the clothes is washed with plenty of water??​

Answer 1

It becomes reddish brown because soap is a base and again turns yellow as water is neutral

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