Question

One example of combination reaction which is also endothermic

Answer 1

2NH3(g) + energy <=> N2(g) + 3H2(g)

Answer 2

# Endothermic : Reaction which absorbs heat

# Combination : Formation of new compound from combining reactants

 2 $NH_{3}$ (g) + energy    ⇔  $N_{2}$ (g)  +  $3H_{2}$ (g)

                                                                                                                 thanks