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Kindly refer to the similar link :
https://www.meritnation.com/ask-answer/question/a-solution-of-substance-x-is-used-for-white-washing-name-sub/science/6233973
https://www.meritnation.com/ask-answer/question/a-solution-of-substance-x-is-used-for-white-washing-name-sub/science/6233973