InterviewSolution
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InterviewSolution
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Mark out the coreect statemnet (s).A. For an exothermic reaction, if `Q` value is` +12.56MeV` and the`KE` of incident particcle is `2.44 MeV`, then the totla `KE` of products of reaction is `15.00 MeV`.B. For an exothermic reaction, if `Q` value is `+12.56MeV` and the KE of incident particcle is `2.44 MeV`, then the totla `KE` of products of reaction is `12.56 MeV`.C. For an endothermic reaction, if we give the energy equal `|Q|` value of reaction, then the reaction will be carried out.D. For an exothermic reaction, the BE per nucleon of products should be greater than the BE per nucleon of reactants. |
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Answer» Correct Answer - a,d For an exothermic reaction `X + x rarr Y+y` If `K_(1)` is the kinetic energy of incident paricles x, then from energy conservation, `K_(i) (m_(x)+M_(x))c^(2)=k_(Y)+K_(y)+(M_(Y)+m_(y))C^(2)` `K_(Y)+K_(y)=k_(i)+(m_(x)+N_(X)-M_(Y)-m_(y))c^(2))` `K_(Y) +K_(y)=K_(i) +Q` In any exothermic reaction, mass of the products is less than the mass of reactants, i.e., in products, the nucleon are more tightly bound and hence have greater BE per nucleon as compared to BE per nucleon or reactants. For endohtermic reaction to be carried out, minimum energy given to the reactant must be greater than `|Q|` value. |
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