Question

Select the endothermic reaction :-
(1) 2H2 + 02----2H20
(2) N2+ 02---- 2NO
(3) 2NaOH + H2SO4 → Na2 SO4 + 2H2O
(4) 302+C2H5OH-----2co2+3H20
​

Answer 1

Mainly we say that combination reaction are considered as endothermic reactions so equation number 1 and equation number 2 or endothermic reaction.

I hope my answer will help you.