Question

When NH4C1 is dissolved in water (a) it is endothermic and chemical change.(b) it is exothermic and physical change.(c) it is endothermic and physical change.(d) it is exothermic and physical change.

Answer 1

the answer is...
it is endothermic reaction and physical change.
I HOPE IT HELPS YOU :)

Answer 2

hey buddy here is the answer !!!

when nh4cl dissolved in water results from the breakdown of crystal lattice of solid NH4Cl and its subsequent dissociation into NH4+ and Cl- ions

and this is endothermic and chemical change .

so the option (a) must be correct ..!!!

hope this helps !!!