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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. Results when cyclic molecules must assume conformations that have eclipsed interactions
aldehyde
saturated hydrocarbon
eclipsed conformation
torsional strain
2. Iso - neo - cyclo
sigma bond
not ignored
disproportionation
nonbonded strain
3. How many stereoisomers can a molecule have with n chiral centers
ring strain
2^n
pi bond
covalent bond
4. Spatial arrangement of the atoms or groups of a sterioisomer
geometric isomers
configuration
sp
hot - acidic potassium permanganate
5. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
oxidizing
Haloalkane
diol
chiral center
6. Compounds with halogen
diastereomers
Haloalkane
protic solvent
configuration
7. Zn/h or CH3/s with ozonolysis
potassium permanganate
anti conformation
reducing
cold potassium permanganate
8. 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
electrophilic addition of H2O
propionaldehyde
structural isomers
catalytic hydrogenation
9. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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10. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
electrophilic addition of H2O
geminal
nonbonded strain
C3H8 + 5O2 = 3CO2 + 4H2O + heat
11. Is bonded to only one other carbon atom
meso compound
primary carbon
Haloalkane
aldehyde
12. Arise from angle strain - torsional strian and nonbonded strain
Acetylene
combustion - disproportionation - free - radical substitution - pyrolysis
ketone
ring strain
13. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
geometric isomers
enantiomer
carbonyl
formaldehyde
14. When boat flips
anti conformation
sp
Vinyl
ring flip
15. Carbon with four different substituents and lack a plane of symmetry
chiral center
relative configuration
ethers
potassium permanganate
16. One s and two p 120 degree apart
sp2
halogenation
electrophilic addition of free radicals
stereoisomers
17. M - chloroperoxybenzoic acid
ozonolysis
mcpba
carbonyl
nucleophile
18. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
carbonyl
geometric isomers
pi bond
aldehyde
19. O3
quantum numbers
C3H8 + 5O2 = 3CO2 + 4H2O + heat
ozonolysis
sp
20. What is produced when o3 with lialh4 or nabh4
alcohol
alkyne
2^n
weak bases
21. F - CL - Br - I
molecular orbital
allyl
halogen
alkyne
22. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
allyl
Alkyne
catalytic hydrogenation
sigma bond
23. Diols with hydroxyl group on adjacent carbon
configuration
vicinal
sigma bond
quantum numbers
24. If a compound is able to rotate plane polarized light.
quantum numbers
ring strain
primary carbon
optical activity
25. 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.
nucleophile
sp3
pyrolysis
nonbonded strain
26. Sharing of electron between atoms
anti conformation
covalent bond
chiral center
saturated hydrocarbon
27. Not solvated
enantiomer
reducing
aprotic solvent
2^n
28. A sigma bond and two pi bonds
alcohol
ethers
eclipsed conformation
triple bond
29. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
formaldehyde
allyl
stereoisomers
fischer projection
30. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
formaldehyde
basicity
triple bond
sp
31. Common name for ethyne
geometric isomers
Combustion
ketone
Acetylene
32. When bond angles deviate from ideal values
structural isomers
angle strain
Alkane nomenclature
basicity
33. 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.
halogen
molecular orbital
ketone
primary carbon
34. Name for propanal
propionaldehyde
reducing
markovnikov's rule
chiral center
35. Same molecular formula but different structure
hot - acidic potassium permanganate
combustion - disproportionation - free - radical substitution - pyrolysis
isomer
pi bond
36. Functionality is specified by alkoxy- prefix. ROR
y- root - en -x-yne
cold potassium permanganate
ethers
angle strain
37. Carbon double bonded to an oxygen
chiral
carbonyl
ring flip
quantum numbers
38. Hydrocarbon with one or more carbon carbon triple bond
alkyne
sp2
protic solvent
covalent bond
39. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
triple bond
basicity
Combustion
electrophilic addition of HX
40. Monosubstituted ethylene
geometric isomers
formaldehyde
cold potassium permanganate
Vinyl
41. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
saturated hydrocarbon
y- root - en -x-yne
nucleophile
conformational isomer
42. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
achiral
gauche conformation
optical activity
hot - acidic potassium permanganate
43. 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-
protic solvent
Ignored
gauche conformation
amines
44. N - l - ml - ms
propionaldehyde
quantum numbers
chiral
anti conformation
45. 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
mcpba
acetaldehyde
protic solvent
basicity
46. Highest energy no separation. or 120 separation.
ionic bond
eclipsed conformation
primary carbon
halogenation
47. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
Combustion
ozonolysis
meso compound
halogenation
48. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
electrophilic addition of H2O
absolute configuration
carboxylic acid
diol
49. Lowest priority group projects into the page
chiral
oxidation
sigma bond
fischer projection
50. Goal is to produce most stable carbocation
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