What are the colour of pH paper , approximate pH value, nature of substance for the following solutions :-
Saliva (before meal ) , saliva (after meal) , lemon juice, colourless aerated drink , carrot juice , coffee, tomato juice , tap water, 1M NaOH , 1M HCl

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Solution

Value and color of ph paper would be approximately around:
✯ Before meal: 7 { green }
✯ After meal: 5 { yellow }
✯ Lemon juice: 2 { pink }
✯ Colorless aerated drink: 6 { lime green }
✯ Carrot juice: 5.6 { yellow / green }
✯ Coffee: 5 { yellow }
✯ Tomato juice: 4{ beige }
✯ Tap water: 7 { green / lime green }
✯ NaOH: 14 { purple }
✯ HCl: 1 { red }

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What are the colour of pH paper , approximate pH value, nature of substance for the following solutions :-Saliva (before meal ) , saliva (after meal) , lemon juice, colourless aerated drink , carrot juice , coffee, tomato juice , tap water, 1M NaOH , 1M HCl

What are the colour of pH paper , approximate pH value, nature of substance for the following solutions :-
Saliva (before meal ) , saliva (after meal) , lemon juice, colourless aerated drink , carrot juice , coffee, tomato juice , tap water, 1M NaOH , 1M HCl