Dal is a pulse and is rich in proteins. Parantha is made up of wheat, which is a source of carbohydrate.
The digestion of carbohydrates begins in the mouth itself. The enzyme salivary amylase of the saliva digests starch into simple sugars. The food is then passed into the stomach. In the stomach, proteins are digested by the enzyme pepsin in presence of hydrochloric acid. After this, the food enters the small intestine. Here, bile makes the food alkaline and it is further digested by enzymes. In the small intestine, the digestion is completed and the carbohydrates get converted into simple sugars and the proteins into amino acids.