Find out a qualitative test for proteins, fats and oils, amino acids and test any fruit juice, saliva, sweet and urine for them.

Take solutions of some juices of fruits, vegetables, cold drinks and various solutions in beakers test tubes and test them with blue and red litmus papers. List out results in the table, by marking (?) in the relevant column if the colour changes, put (?) if the colour is unchanged.

You are asked to find out the acids present in the substances? placed in front of you. Write the names of the acids present in them by collecting information from any source available to you. Substances placed in front of you : Apples, Tea, Olive oil and fats.