Question
Pick out the exothermic reaction out of the following:
Options:
A .  C + H₂O = CO + H₂
B .  CaC₂ + H₂O = Ca(OH)₂ + C₂H₂
C .  MgCO₃ = MgO + CO₂
D .  all (a), (b) and (c)
Answer: Option B
Answer: (b).CaC₂ + H₂O = Ca(OH)₂ + C₂H₂
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