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All the combination reactions are exothermic???

Dear student,

All combinations reactions are not exothermic in nature but maximum combination reactions are exothermic. 
For example- 
N2 + O2 -----> 2NO 
The above reaction is a combination reaction that is endothermic in nature. To feasible, the above reaction heat is given.

Regards

 

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Whether a reaction is exothermic or endothermic depends upon the nature of the reactants and the energy released in bond breaking and bond formation. We can say that most of the combination reactions are exothermic, but each and every combination reaction will not be exothermic.
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Yes, Most the combination reactions are exothermic.
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What will we write in paper true or false ???
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