If a process is both endothermic and spontaneous then

For a process that is both endothermic and spontaneous:

The reaction of sodium with oxygen is endothermic and spontaneous exothermic and non spontaneous exothermic and spontaneous endothermic and non spontaneous

For a spontaneous process :-

For a spontaneous process.

For a spontaneous process,

For an endothermic reaction to be spontaneous

For an endothermic reaction to be spontaneous

The process that is NOT endothermic in nature is :