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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. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
geometric isomers
disproportionation
enantiomer
Ignored
2. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
halogenation
Alkene
ring strain
enantiomer
3. What is produced when o3 with lialh4 or nabh4
alcohol
meso compound
torsional strain
stereoisomers
4. Steps of free radical substitution
nucleophile
eclipsed conformation
initiation propagation termination
propionaldehyde
5. Is bonded to only one other carbon atom
nucleophile
alkyne
primary carbon
allyl
6. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
ionic bond
cold potassium permanganate
not ignored
Haloalkane
7. F - CL - Br - I
hydroboration
enantiomer
halogen
relative configuration
8. Iso - neo - cyclo
not ignored
oxidation
alcohol
oxidizing
9. Goal is to produce most stable carbocation
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10. Two hydroxyl groups
diol
nonbonded strain
pi bond
structural isomers
11. Carbon with four different substituents and lack a plane of symmetry
chiral center
acetaldehyde
2^n
mcpba
12. Combustion reaction occurs through a radical process
alcohol
aldehyde
Acetylene
C3H8 + 5O2 = 3CO2 + 4H2O + heat
13. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
sigma bond
Vinyl
geminal
absolute configuration
14. A = observed rotation / concentration * length
markovnikov's rule
Haloalkane
geometric isomers
specific rotation
15. Object that is not superimposable upon mirror image
acetaldehyde
chiral
nucleophile
electrophilic addition
16. 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.
ring flip
absolute configuration
diastereomers
nonbonded strain
17. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
formaldehyde
aldehyde
carboxylic acid
carbonyl
18. Chain of carbons connected by single bonds with hydrogen atoms attached.
ring strain
electrophilic addition of free radicals
Alkane
ethers
19. Charged - need electrons
electrophilic addition of X2
chiral
electrophile
amines
20. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
potassium permanganate
hot - acidic potassium permanganate
2^n
absolute configuration
21. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
aldehyde
C3H8 + 5O2 = 3CO2 + 4H2O + heat
electrophilic addition of HX
pi bond
22. Most similar. same molecule only at different points in their rotation. show them with newmans projections
conformational isomer
combustion - disproportionation - free - radical substitution - pyrolysis
halogenation
aldehyde
23. Not solvated
aprotic solvent
diastereomers
anti conformation
relative configuration
24. No double bonds. it has the maximum number of hydrogens.
amines
ozonolysis
saturated hydrocarbon
ionic bond
25. Diols with hydroxyl group on adjacent carbon
configuration
basicity
eclipsed conformation
vicinal
26. Carbonyl located in middle or somewhere in chane. Named with One
weak bases
cold potassium permanganate
vicinal
ketone
27. Highest energy no separation. or 120 separation.
2^n
combustion - disproportionation - free - radical substitution - pyrolysis
eclipsed conformation
mcpba
28. If a compound is able to rotate plane polarized light.
carboxylic acid
optical activity
ring flip
sp
29. Di - tri - t - sec - n -
Ignored
halogenation
diastereomers
isomer
30. Functionality is specified by alkoxy- prefix. ROR
Combustion
meso compound
alcohol
ethers
31. When bond angles deviate from ideal values
gauche conformation
angle strain
disproportionation
fischer projection
32. Non mirror image of configurational isomers. cis and trans alkenes are them. possible when a molecule has two or more stereogenic centers that differ at some but not alll of the centers. they require multiple chiral centers.
meso compound
allyl
diastereomers
angle strain
33. How many stereoisomers can a molecule have with n chiral centers
meso compound
hydroboration
not ignored
2^n
34. Hydrocarbon with one or more carbon carbon triple bond
basicity
alkyne
initiation propagation termination
Haloalkane
35. Share molecular formula but have different chemical and physical properties
structural isomers
alcohol
not ignored
optical activity
36. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
oxidation
ring strain
pi bond
amines
37. M - chloroperoxybenzoic acid
sp
mcpba
conformational isomer
electrophile
38. 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.
Alkane nomenclature
sp2
configuration
molecular orbital
39. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
oxidizing
sp
covalent bond
protic solvent
40. Formed by mixing different types of orbitals
hybridization
polymerization
pyrolysis
disproportionation
41. What are the best leaving groups?
electrophilic addition
protic solvent
anti conformation
weak bases
42. One s and three p orbitals
sp3
diastereomers
reducing
saturated hydrocarbon
43. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
relative configuration
catalytic hydrogenation
molecular orbital
geometric isomers
44. Lowest priority group projects into the page
allyl
nonbonded strain
enantiomer
fischer projection
45. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
hot - acidic potassium permanganate
protic solvent
torsional strain
allyl
46. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
hydroboration
enantiomer
stereoisomers
reducing
47. Methyl are 60 degrees apart. kinda stable
gauche conformation
chiral center
initiation propagation termination
ozonolysis
48. Carbon carbon triple bonds. Suffix-yne.
oxidation
halogenation
Alkyne
configuration
49. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
stereoisomers
oxidizing
halogenation
acetaldehyde
50. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
electrophilic addition of free radicals
allyl
sp2
hydroboration