Solution:
The above statement is true.The lemon juice and vinegar taste sour. In general, acids are chemical substances characterised by a sour taste in an aqueous medium. They have the particular characteristic of turning blue litmus red. When the acid binds to the base, it becomes a neutral substance. Usually, this reaction can lead to water and salt. However, it is often seen when strong acids react with strong bases. In this case, lemon juice and vinegar taste sour because they contain acids. Lemon juice has an average of five to six per cent citric acid.
