Here's a challenging theoretical question for an objective-type chemistry assessment: Question: "In a multi-step organic synthesis, a chemist aims to convert compound A to compound B using a series of reactions. Initially, compound A is converted to compound C through a nucleophilic substitution reaction. Next, compound C is transformed into compound D via an electrophilic addition reaction. Finally, compound D is converted to the desired product, compound B, through a dehydration reaction. Given that each step has a yield of 80%, what is the overall percent yield of compound B from compound A, and what type of isomerism is most likely to be observed between compounds C and D if the electrophilic addition involves a symmetrical alkene and an unsymmetrical reagent?" Options: 1. 51.2% yield, Geometrical isomerism 2. 64.0% yield, Optical isomerism 3. 51.2% yield, Optical isomerism 4. 64.0% yield, Geometrical isomerism This question tests knowledge of organic reaction mechanisms, yield calculations, and understanding of isomerism concepts in organic chemistry. Don't use chat gpt.