Endothermic and Exothermic Reactions - Quiz 1

This quiz on endothermic and exothermic reactions. You may like to revise this chapter first before attempting the question. 

1.  Which of the following processes is/ are exothermic?
Process 1: Cl₂ (g) ---> 2 Cl (g)
Process 2: C (s) + O₂ (g) ---> CO₂ (g)
Process 3: H₂O (s) ---> H₂O (l)
A. 1 only
B. 2 only
C. 1 and 2 only
D. 2 and 3 only
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