OAT Domain 1.3: Survey of the Natural Sciences, Organic Chemistry Welcome to your OAT Domain 1.3: Survey of the Natural Sciences, Organic Chemistry 1. OAT: Survey of the Natural Sciences, Organic Chemistry What type of isomerism is exhibited by compounds that have the same molecular formula and sequence of bonded atoms, but differ only in the three-dimensional orientations of their atoms in space? Structural isomerism Stereoisomerism Geometric isomerism Conformational isomerism None 2. OAT: Survey of the Natural Sciences, Organic Chemistry In organic chemistry, which reaction mechanism describes the substitution reaction where the bond formation and bond breaking occur simultaneously? SN1 SN2 E1 E2 None 3. OAT: Survey of the Natural Sciences, Organic Chemistry What is the product of the ozonolysis of 1-methylcyclohexene under reductive conditions? 1-methylcyclohexanol Methanol and cyclohexanone 1-methylcyclohexane 1-methylcyclohexanone and formaldehyde None 4. OAT: Survey of the Natural Sciences, Organic Chemistry Which statement best describes a reaction's mechanism involving a carbocation intermediate? It likely follows an SN1 reaction pathway. It proceeds via a direct bimolecular nucleophilic substitution. It is an example of a pericyclic reaction. It is catalyzed by strong bases. None 5. OAT: Survey of the Natural Sciences, Organic Chemistry What is the major organic product when 2-methylpropene reacts with water in the presence of sulfuric acid? 2-methylpropanol 2-methyl-2-propanol 2-methyl-1-propanol Methanol None 6. OAT: Survey of the Natural Sciences, Organic Chemistry In an aldol condensation, what is the role of the base? To protonate the carbonyl oxygen To deprotonate the alpha-carbon To facilitate nucleophilic attack on the carbonyl carbon To stabilize the leaving group None 7. OAT: Survey of the Natural Sciences, Organic Chemistry Which reagent is most suitable for converting a primary alcohol to an aldehyde without further oxidation to a carboxylic acid? Chromic acid Pyridinium chlorochromate 'PCC' Potassium permanganate Hydrochloric acid None 8. OAT: Survey of the Natural Sciences, Organic Chemistry What is the major product of the Diels-Alder reaction between 1,3-butadiene and ethylene? 1,4-Hexadiene Cyclohexene Cyclobutane Cyclohexane None 9. OAT: Survey of the Natural Sciences, Organic Chemistry What distinguishes a nucleophilic addition reaction in aldehydes and ketones from a nucleophilic substitution reaction? The use of a catalyst The formation of a new sigma bond The involvement of a carbonyl group The expulsion of a leaving group None 10. OAT: Survey of the Natural Sciences, Organic Chemistry Which type of molecular orbitals are primarily involved in the bonding of benzene, according to molecular orbital theory? sp3 hybrid orbitals sp2 hybrid orbitals p orbitals d orbitals None 11. OAT: Survey of the Natural Sciences, Organic Chemistry What is the expected outcome when cyclopentadiene reacts with maleic anhydride in a Diels-Alder reaction? A linear diene A bicyclic ketone A bicyclic anhydride A linear alcohol None 12. OAT: Survey of the Natural Sciences, Organic Chemistry What is the reactivity order of the following halides in an SN2 reaction? Methyl chloride > 1-chloropropane > 2-chloropropane > 2-chloro-2-methylpropane 2-chloro-2-methylpropane > 2-chloropropane > 1-chloropropane > Methyl chloride 1-chloropropane > Methyl chloride > 2-chloropropane > 2-chloro-2-methylpropane Methyl chloride > 1-chloropropane > 2-chloro-2-methylpropane > 2-chloropropane None 13. OAT: Survey of the Natural Sciences, Organic Chemistry Which functional group transformation is typically achieved using Wolff-Kishner reduction? Alcohol to ketone Alkene to alkane Ketone to alkane Carboxylic acid to aldehyde None 14. OAT: Survey of the Natural Sciences, Organic Chemistry In the presence of ultraviolet light, what type of reaction does chloroform undergo with alkenes? Addition Substitution Elimination Rearrangement None 15. OAT: Survey of the Natural Sciences, Organic Chemistry Which technique is most commonly used to determine the structure of organic molecules through the analysis of molecular vibrations? Mass spectrometry Nuclear magnetic resonance (NMR) spectroscopy Infrared (IR) spectroscopy Ultraviolet-visible (UV-Vis) spectroscopy None 16. OAT: Survey of the Natural Sciences, Organic Chemistry What is the outcome of the reaction between phenol and chloroform in the presence of aqueous NaOH? Salicylic acid Benzophenone Phenyl salicylate Salicylaldehyde None 17. OAT: Survey of the Natural Sciences, Organic Chemistry Which intermediate is formed during the nitration of benzene using nitric acid and sulfuric acid? Nitronium ion (NO2+) Nitrite ion (NO2-) Nitrate ion (NO3-) Nitroso group (NO) None 18. OAT: Survey of the Natural Sciences, Organic Chemistry What is the main product of the reaction of benzaldehyde with an excess of ethanol in the presence of an acid catalyst? Ethyl benzoate Benzyl alcohol Acetaldehyde Benzoin None 19. OAT: Survey of the Natural Sciences, Organic Chemistry What type of reaction occurs when isoprene undergoes polymerization? Condensation Addition Substitution Radical polymerization None 20. OAT: Survey of the Natural Sciences, Organic Chemistry What is the main use of the Simmons-Smith reaction in organic synthesis? To reduce alkenes to alkanes To convert alcohols to ethers To cyclopropanate alkenes To cleave ethers None 1 out of 20 Time is Up! Time's up
