Question

experiment on action of acid on walls of stomach  

Answer 1

Nothing happens in the inner walls of stomach,because an enzyme called mucus is released from digestive glands for stomachs protection.

Answer 2

take two leaves and mark them as A and B now apply  vaseline  on A~leaf and  now pour dil hcl  on both leaves u will observe the leaf with vaseline do not affected as B~`leaf the same thing happens in the stomach