Explain the term "Selectivity" and "Yield".Selectivity is defined as the ratio of moles of desired product to moles of undesired product.Yield is defined as the ratio of moles of product formed to moles of reactant eitherfed or consumed and What are the factors affected by the pattern of flow within the vessel for multiple reactions? The factors affected by the pattern of flow within the vessel for multiple reactions are(i) The Volume of the vessel, (ii) The product distribution, (iii) Selectivity and yield of product?