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Test your basic knowledge |
MCAT Organic Chemistry
Start Test
Study First
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. F - CL - Br - I
diol
Alkane
racemic mixture
halogen
2. Carbon with four different substituents and lack a plane of symmetry
primary carbon
chiral center
alcohol
halogen
3. A = observed rotation / concentration * length
C3H8 + 5O2 = 3CO2 + 4H2O + heat
specific rotation
diol
aprotic solvent
4. A molecule with an internal plane of symmetry
markovnikov's rule
molecular orbital
meso compound
mcpba
5. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
nonbonded strain
electrophilic addition of HX
hydroboration
chiral center
6. Hydrocarbon with one or more carbon carbon triple bond
alkyne
primary carbon
sigma bond
initiation propagation termination
7. Charged - need electrons
methylene
ring strain
electrophile
electrophilic addition
8. Di - tri - t - sec - n -
Ignored
Alkane nomenclature
gauche conformation
diastereomers
9. Sharing of electron between atoms
covalent bond
cold potassium permanganate
molecular orbital
ozonolysis
10. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
weak bases
stereoisomers
electrophilic addition
not ignored
11. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
geometric isomers
enantiomer
Haloalkane
carboxylic acid
12. Goal is to produce most stable carbocation
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13. Moleculse that have the opposite configuration at their one chiral center. or if multiple chiral centers - must have the opposite configuration at every one of their chiral centers to be enantiomers. identical physical properties and much of the same
ozonolysis
Alkene
nonbonded strain
enantiomer
14. 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
combustion - disproportionation - free - radical substitution - pyrolysis
structural isomers
propionaldehyde
catalytic hydrogenation
15. Combustion reaction occurs through a radical process
C3H8 + 5O2 = 3CO2 + 4H2O + heat
anti conformation
potassium permanganate
acetaldehyde
16. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
primary carbon
pi bond
reducing
racemic mixture
17. Methyl are 60 degrees apart. kinda stable
weak bases
C3H8 + 5O2 = 3CO2 + 4H2O + heat
alcohol
gauche conformation
18. One s and two p 120 degree apart
markovnikov's rule
diol
angle strain
sp2
19. Most similar. same molecule only at different points in their rotation. show them with newmans projections
torsional strain
triple bond
conformational isomer
Alkane nomenclature
20. Monosubstituted ethylene
Alkyne
C3H8 + 5O2 = 3CO2 + 4H2O + heat
sigma bond
Vinyl
21. Carbon double bonded to an oxygen
carbonyl
structural isomers
enantiomer
configuration
22. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
triple bond
ethers
Alkene
Vinyl
23. Functionality is specified by alkoxy- prefix. ROR
ozonolysis
ethers
oxidation
2^n
24. Share molecular formula but have different chemical and physical properties
absolute configuration
structural isomers
meso compound
mcpba
25. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
nucleophile
electrophilic addition of H2O
2^n
optical activity
26. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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27. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
geometric isomers
disproportionation
halogen
pi bond
28. Formed by mixing different types of orbitals
hydroboration
hybridization
basicity
sp2
29. Results when nonadjacent atoms or groups compete for space. dominant source of energy in flagpole interactions of the boat conformation. thus it goes in various conformations like chair boat and twist.
nonbonded strain
Ignored
geometric isomers
C3H8 + 5O2 = 3CO2 + 4H2O + heat
30. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
initiation propagation termination
isomer
ozonolysis
electrophilic addition of free radicals
31. Iso - neo - cyclo
ring flip
specific rotation
gauche conformation
not ignored
32. Alphabetical order of alkane rxn
Vinyl
combustion - disproportionation - free - radical substitution - pyrolysis
allyl
relative configuration
33. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
cold potassium permanganate
torsional strain
alcohol
sp3
34. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
alkyne
disproportionation
diastereomers
specific rotation
35. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
carboxylic acid
absolute configuration
electrophilic addition of X2
alcohol
36. Is bonded to only one other carbon atom
sp2
primary carbon
pi bond
carboxylic acid
37. Diols with hydroxyl group on adjacent carbon
triple bond
pyrolysis
vicinal
relative configuration
38. Common name for ethyne
Acetylene
Alkane nomenclature
combustion - disproportionation - free - radical substitution - pyrolysis
alcohol
39. Object that is not superimposable upon mirror image
Ignored
gauche conformation
chiral
electrophilic addition of free radicals
40. O3
ozonolysis
Alkyne
sp2
allyl
41. Use the Greek root for the number of carbons followed by the ending - - ane
y- root - en -x-yne
Alkyne
Alkane nomenclature
Acetylene
42. How many stereoisomers can a molecule have with n chiral centers
2^n
specific rotation
geometric isomers
fischer projection
43. Name for mathanal
ethers
aldehyde
formaldehyde
angle strain
44. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
aldehyde
disproportionation
sp3
polymerization
45. 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
allyl
molecular orbital
torsional strain
electrophilic addition of HX
46. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
fischer projection
enantiomer
not ignored
achiral
47. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
ozonolysis
y- root - en -x-yne
halogenation
Combustion
48. Refers to the =CH2 group
oxidation
Vinyl
methylene
nonbonded strain
49. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
C3H8 + 5O2 = 3CO2 + 4H2O + heat
ozonolysis
peroxycarboxylic acid
carboxylic acid
50. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
structural isomers
halogenation
optical activity
Vinyl