MCQ
An exothermic reaction is one which
- ATakes place only on heating
- BIs accompanied by a flame
- CIs accompanied by a absorption of heat
- ✓Is accompanied by evolution of heat
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$(i)\, KCl$ or $MgO$ $(ii) \,LiF$ or $LiBr$ $(iii)\, Mg_3N_2$ or $NaCl$