There will be no colour change observed on blue litmus paper. Since lemon juice is acidic in nature so it turns the blue litmus to red. Whereas soap solution is a mild alkali, there will no change in colour. It will change the colour of red litmus to red.
Answer
It turns blue to red litmus paper as lemon is acidic in nature
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Answer:
There will be no colour change observed on blue litmus paper. Since lemon juice is acidic in nature so it turns the blue litmus to red. Whereas soap solution is a mild alkali, there will no change in colour. It will change the colour of red litmus to red.