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                                    Q-1) What does one mean by exothermic and endothermic reactions? Give examples. | 
                            
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Answer»  Answer: Exothermic REACTIONS : Reactions in which heat is given out along with the PRODUCTS are CALLED exothermic reactions.Examples:- Rusting IRON, settlingEndothermic reactions:Reactions in which ENERGY is absorbed are known as endothermic reactions.Example : The process of photosynthesis, melting of ice  | 
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