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A solution turns methyl orange into yell...

A solution turns methyl orange into yellow. The approximate pH of solution is : \

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Yellow colour with methyl orange means `pH gt 4.5`
Yellow colour with methyl red means pH ` gt 6.2`
Yellow colour with phenol red means `pH lt 6.4` . Hence, the solution has pH between 6.2 to 6.4.
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