pH value of the (1) Saliva (before meal) (2) Saliva (after meal) (3) Lemon juice (4) Colourless aerated drink (5) Carrot juice (6) Coffe (7) Tomato juice (8) Tap water

Answer: pH value of Saliva (before meal) is 7.4 

pH value of Saliva (after meal) is 5.8

pH value of lemon juice is 2.5

pH value of a Colourless aerated drink is 6

pH value of carrot juice is 5.6

pH value of Tomato juice is 4.1

pH value of Tap water is 7