Answers

2016-01-18T19:52:49+05:30
Nothing happens in the inner walls of stomach,because an enzyme called mucus is released from digestive glands for stomachs protection.
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2016-01-18T22:04:54+05:30
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
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