Coffee is brown and bitter in taste. Is it an acid? Or a base? Don't give the answer without any test. You are in the dark with its taste.

Question

This is a riddle from my NCERT Science Textbook of 7_th class.

Answer 1

Bitter = base

 

Sour = acid

 

But, in the case of coffee, it has a low pH, so it is considered acidic.