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MCAT Organic Chemistry

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon






2. Object that is not superimposable upon mirror image






3. A = observed rotation / concentration * length






4. When bond angles deviate from ideal values






5. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc






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






7. O3






8. Alphabetical order of alkane rxn






9. Use the Greek root for the number of carbons followed by the ending - - ane






10. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal






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






12. 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






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






14. Rotations cancel each other out therefore no optical activity






15. Compounds with halogen






16. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.






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






18. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.






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






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






21. Highest energy no separation. or 120 separation.






22. One s and three p orbitals






23. Functionality is specified by alkoxy- prefix. ROR






24. When boat flips






25. 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-






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






27. Diols with hydroxyl group on adjacent carbon






28. Hydrocarbon with one or more carbon carbon triple bond






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






30. Goal is to produce most stable carbocation

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31. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans






32. A sigma bond and two pi bonds






33. Two hydroxyl groups






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






35. Lowest priority group projects into the page






36. If a compound is able to rotate plane polarized light.






37. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain






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






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






40. Refers to the =CH2 group






41. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule






42. Same molecular formula but different structure






43. Combustion reaction occurs through a radical process






44. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation






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






46. Diol with hydroxyl group on same carbon






47. Steps of free radical substitution






48. Sharing of electron between atoms






49. 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






50. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space