Quick lime reacts vigorously with water releasing a large amount of heat. Which type of reaction is this ? 

1) Precipitation reaction

2) Combination reaction 

3) Decomposition reaction 

4) Exothermic reaction 

A) 1, 2 

B) 2, 3 

C) 2, 4 

D) 4


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Correct option is C) 2, 4