Which of the following is an endothermic reaction?
A
Absorption of SO<sub>3</sub> in 98% H<sub>2</sub>SO<sub>4</sub>
B
C + H<sub>2</sub>O = CO + H<sub>2</sub>
C
Thermal dissociation of iron pyrites
D
Both B and C
Correct Answer: Both B and C