Question

meaning of red litmus​

Answer 1

The main use of litmus is to test whether a solution is acidic or basic. 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).

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Answer 2

Answer:

it is made of lichen which is used in indicator red litmus changes into blue in acidic nature