Question

how we identify a substance is basis or neutral by using blue litmus paper​

Answer 1

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In Basic :- By using Red litmus paper.. By dipping. The colour of red litmus paper turns to blue. It indicates that the substance is basic in Nature.

In Acids :- By using Blue litmus paper. By dipping.

The colour of Blue litmus paper turns to red. It indicates that the substance is acidic in Nature.

In Neutral :- No change in colour..

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Answer 2

Answer:

Explanation:

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