Question

Colour of saliva before meal​

Answer 1

Explanation:

1)saliva (before a meal) is 7.4 which is slightly basic with green colour. 2) saliva (after a meal) is 5.8 which is acidic with yellow colour. 3) lemon juice is 2.5 which is always acidic with pink colour. 4) colorless aerated drink is 6 which is slightly acidic with lime green colour.

Answer 2

Explanation:

1)saliva (before a meal) is 7.4 which is slightly basic with green colour. 2) saliva (after a meal) is 5.8 which is acidic with yellow colour. 3) lemon juice is 2.5 which is always acidic with pink colour. 4) colorless aerated drink is 6 which is slightly acidic with lime green colour.