When a person puts food in his mouth, then teeth cut it into small pieces, chew and grind it. The salivary glands in the mouth secretes saliva which is mixed with the food by tongue. The saliva contains an enzyme which starts the digestion in mouth. The food goes further to the stomach for further di-gestion process. The stomach produces gastric juice which contains different substances. Rn acid present in stomach also helps to kill bacteria which may enter the stomach with food.1. The saliva secreted by salivary glands does nota. Bring about hydrolysis of starch up to 90%b. Initiate the process of digestionc. Gives safety against dental carriesd. Contain electrolytes like sodium, potassium, calcium etc.2. The enzyme present in saliva isa. Maltaseb. Ptyalinc. Sucrased. Invertase3. A salivary gland is ...............a. Brunners glandb. Sublingual glandc. Lacrimal glandd. Adrenal gland4. What substances are present in gastric juice?a. Hydrochloric acidb. Mucusc. Enzyme pepsind. All of the above5. Name the acid present in the stomach.a. Nitric acidb. Sulphuric acidc. Hydrochloric acidd. None of the above