(i) The excess acid in the stomach causes indigestion which produces pain and irritation.
In order to cure indigestion and get rid of pain, one can take baking soda solution, which have no toxic effects on the body.
(ii) Milk of magnesia can be used as a remedy instead of baking soda.
(iii) The values gain by the given passage are:
(a) Careful learning in the class.
(b) Use of right knowledge at the right place.