Question

what does mean by stomach and endothermic reaction give example

Answer 1

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•Stomach is the most dialated J-shaped part of the alimentary canal, which is situated between the oesophagus and the small intestine, below the diaphragm. It serves as a store house of food where partial digestion takes place through the secretion of gastric glands. The muscular walls of the stomach help in mixing the food properly.


Endothermic reaction : The reaction which occurs by the absorption of heat /energy, is
called endothermic reaction. It is also called hypothermic reaction. In other words, the energy needed for reaction to occur is less than the total energy released.

As a result of this, the extra energy is absorbed in the form of heat. Photosynthesis is an example of endothermic reaction.

Examples :

1. 2HgO (s) + Heat ------- 2Hg (l) + O2 (g)

2. NH4Cl (s) + Heat -------- NH3 (g) + HCl (g)

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