MCAT Chem Domain 4: Organic Chemistry Welcome to your MCAT Chem Domain 4: Organic Chemistry 1. MCAT Chem: Organic Chemistry Which of the following reactions best represents a Diels-Alder reaction? An alkene reacting with a halogen to form a dihaloalkane. A diene reacting with a dienophile to form a cyclohexene derivative. An alkyne undergoing hydration to form a ketone. An alkene reacting with water in the presence of acid to form an alcohol. None 2. MCAT Chem: Organic Chemistry In the context of aromaticity, which of the following molecules is considered aromatic? Cyclobutadiene Benzene Cyclohexene Cyclooctatetraene None 3. MCAT Chem: Organic Chemistry Which type of isomerism is exhibited by compounds having the same molecular formula, same structural formula, but different spatial orientation due to the presence of a double bond? Enantiomerism Diastereomerism Geometric isomerism Conformational isomerism None 4. MCAT Chem: Organic Chemistry Which mechanism correctly describes the conversion of an alcohol to an alkyl chloride using thionyl chloride (SOCl2)? SN1 SN2 E1 E2 None 5. MCAT Chem: Organic Chemistry The term "enantioselective" refers to a reaction that: Produces an equal mixture of enantiomers. Produces more of one enantiomer over the other. Does not involve chiral molecules. Produces only diastereomers. None 6. MCAT Chem: Organic Chemistry In NMR spectroscopy, what does a splitting pattern of a signal into a triplet indicate about the proton generating this signal? It is not adjacent to any protons. It is adjacent to one proton. It is adjacent to two protons. It is adjacent to three protons. None 7. MCAT Chem: Organic Chemistry What feature distinguishes a Grignard reagent? A carbon-metal bond A carbon-nitrogen double bond A carbon-carbon triple bond A carbon-oxygen double bond None 8. MCAT Chem: Organic Chemistry Which statement best describes the Hammond postulate? The transition state of a reaction resembles the structure of the closest stable species. A reaction's rate is directly proportional to its activation energy. Electronegativity differences between atoms determine bond polarity. The presence of a catalyst lowers the activation energy of a reaction. None 9. MCAT Chem: Organic Chemistry In organic chemistry, a protecting group is used to: Increase the reactivity of a functional group. Prevent a reaction at a specific site of a molecule during a sequence of reactions. Identify the presence of specific functional groups in a molecule. Facilitate the removal of a functional group. None 10. MCAT Chem: Organic Chemistry What is the outcome of the Wittig reaction? Formation of an alcohol Formation of an alkene Formation of a ketone Formation of an amide None 1 out of 10 Time is Up! Time's up
