Question

why is tamarind used for wasng copper and brass vessels?

Answer 1

Moreover, when it comes to cleaning, tamarind has an added advantage. Tamarind has a thick and hard crust unlike lemon or vinegar. This crust of tamarind can be used to scrub off oily surface from utensils with ease. ... Also, you can soak your grubby copper vessels in tamarind water to soften the accumulated dirt on them.

Answer 2

a layer is formed on brass and copper vessel which is basic in nature , tamarind is acid in nature when acid reacts with base it neutralises the effect. this is why it is used in cleaning