Final Colour of the Test Solution S. No. Indicator that can be Used Initial Colour of the Test Solution Test Solution 1. Lemon juice Colourless Red Blue litmus 2. Vinegar Colourless 3. Milk of magnesia Phenolphthalein White 4. Soda water Red 5. Baking soda solution Colourless Blue 6. Orange juice Blue litmus Orange 7. Soap solution Colourless Magenta 8. Shampoo (dilute) Turmeric solution Colourless

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