When we dip _ litmus paper in an acidic medium it will turn into _.

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Solution

Litmus paper is an indicator, which tells about the nature of solution. If we take red litmus paper and dip it in the basic medium it will turn into blue whereas in acidic medium there is no change in color. If we take blue litmus paper and dip it in the acidic medium it will turn into red blue whereas in basic medium there is no change in color.

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Q. Read the following statements:
I. When a red litmus paper is dipped into reaction mixture of a saponification reaction, it turns blue and the reaction is exothermic.
II. When a blue litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is exothermic.
III. When a red litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is endothermic.
IV. When a blue litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is endothermic.
Which of the above statements are correct?

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