Question

Which one of the following foods have the highest pH scale?

a.) lemon

b.) soft drinks

c.) tomato

d.) black coffee

Answer 1

The correct answer is

d.) black coffee

This is because black coffee is the least acidic among the four options given. The value is around 5 on the pH scale. All the given options are acidic in nature and their pH is below 7. The smaller the pH value, the greater is acidity. The other options given here are more acidic than black coffee, so they have lesser pH value comparatively. Lemon is most acidic of all these followed by soft drinks and tomato.

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