Question

what is the example of endothermic reaction

Answer 1

These examples could be written as chemical reactions, but are more generally considered to be endothermic or heat-absorbing processes: melting ice cubes. melting solid salts. evaporating liquid water.

Answer 2

the endothermic is that in which heat is absorbed

example  :-   photosynthesis:-

                      6CO2 + 12H2O====C6H12O6 +6O2 +6H20 { IN THE CONDITION OF SUNLIGHT AND CHLOROPHYLL}

it is endothermic because light energy {heat] is being absorbed by leaf of plants.
besides you also take the example as:-

:----when gas molecule is being splitts ,the heat is absorbed.

:---evaporating liquids water is also considered as endothermic reaction