Question

The table below shows the following in increasing order of their pH values – Saliva (before meal), Lemon juice, Milk of magnesia, Tap water.
Select the row which has the substances arranged in the correct order:

a) Saliva (before meal) < Lemon juice < Milk of magnesia < Tap water
b) Lemon juice < Saliva (before meal) < Tap water < Milk of magnesiac) Saliva (before meal) < Tap water < Lemon juice < Milk of magnesia
d) Lemon juice < Tap water < Saliva (before meal) < Milk of magnesia

Answer 1

Answer:

saliva

Explanation:

saliva because of it is acid

Answer 2

Answer:

d

Explanation:

pH of lemon juice is 2.5,

pH of water is 7,

pH of saliva (before meal) is 7.4,

pH of milk of magnesia is 10.5

Hence d)..is correct