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MCAT Organic Chemistry

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal






2. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image






3. Compounds with halogen






4. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton






5. Combustion reaction occurs through a radical process






6. Diols with hydroxyl group on adjacent carbon






7. Results when cyclic molecules must assume conformations that have eclipsed interactions






8. F - CL - Br - I






9. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol






10. What are the best leaving groups?






11. Reducing an alkene by adding molecular hydrogen to double bond with aid of metal catalyst. e.g. pt - pd - ni. takes place on surface of metal so it does syn addition






12. Zn/h or CH3/s with ozonolysis






13. Di - tri - t - sec - n -






14. Spatial arrangement of the atoms or groups of a sterioisomer






15. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane






16. If reagent has a bunch of oxygen






17. Highest energy no separation. or 120 separation.






18. Name for mathanal






19. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O






20. Common name for ethyne






21. Sharing of electron between atoms






22. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.






23. Nitrogen containing compound - longest chain attached to nitrogen used in backbone. use e and replace with AMINE. if more complex molecule present - use prefix amino. IF additional group added - use N-






24. Hydrocarbon with one or more carbon carbon triple bond






25. Refers to the =CH2 group






26. Is bonded to only one other carbon atom






27. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.

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28. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution






29. Propylenes attached to a backbone at the C-3 position. Meaning the double bond at end of the chain and single bonded carbon at rest






30. No double bonds. it has the maximum number of hydrogens.






31. Solvents with protons in solution - e.g. water or alcohol. large atoms tend to be better nucleophiles in here because they can shed the solvating protons around them and are more polarizable






32. Occur when a molecule is broken down by heat. used to reduce the avverage molecular weight of heavy oils. c - c - bonds are cleave dand make small chain alkyl radicals that recombine to form different alkanes






33. When bond angles deviate from ideal values






34. Most favorable of staggared conformations






35. Two hydroxyl groups






36. Carbonyl located in middle or somewhere in chane. Named with One






37. What is produced when o3 with lialh4 or nabh4






38. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.






39. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene






40. Functionality is specified by alkoxy- prefix. ROR






41. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z






42. Same molecular formula but different structure






43. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced






44. Lowest priority group projects into the page






45. Reaction of alkane with oxygen to form carbon dioxide - water and heat.






46. Nucleus lover. electron rich species that are attracked to charged atoms






47. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.






48. Carbon carbon triple bonds. Suffix-yne.






49. One s and two p 120 degree apart






50. When two atomic orbitals combine. obtained mathematically by adding or subtracting wave functions. if sings are the same - make bonding - if different - less stable antibonding.