Often coloured spots are formed on clothes during washing. - Vidyadip

Question

Often coloured spots are formed on clothes during washing.

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Answer

Curry stains stick fast to the criss-crossing threads of the material of our clothes.
Curry contains turmeric a natural indicator which turns red in a basic solution.
Soaps are sodium salts of fatty acids and are basic in nature.
While washing the clothes, turmeric reacts with soap solution and turns red forming red spots on the clothes.
But the spots disappear after washing the clothes with plenty of water.

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