what is the use of blue litmus paper ??
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It is used to test An Acid or base .
Litmus paper change its colour in different substances..
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Answer:
The main use of litmus is to test whether a solution is acidic or basic.
Explanation:
Light-blue litmus paper turns red under acidic conditions, and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple.
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