What change will you observe if you test soap with litmus paper (red and blue)? - Texcellency

Q. What change will you observe if you test soap with litmus paper (red and blue)?

When you test soap with litmus paper:

Soap is basic in nature, so it will turn red litmus paper blue.
Blue litmus paper will remain blue, as soap doesn’t affect it.
This shows that soap is alkaline (basic).

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