Question

define endothermic reaction

Answer 1

the rxn in which heat is absored

endo means *in*
and
thermic means *heat*

Answer 2

Hii friend,

A reaction in which a lot of heat is absorbed during reaction is called an endothermic reaction.

Example:-

C(s) + 2S (s) ---------→ CS2 (L)

C (s) + H2O ---------→ CO (g) + H2

HOPE IT WILL HELP YOU...... :-)