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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. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
hydroboration
halogen
enantiomer
quantum numbers
2. Nucleus lover. electron rich species that are attracked to charged atoms
nucleophile
stereoisomers
covalent bond
cold potassium permanganate
3. Share molecular formula but have different chemical and physical properties
Combustion
structural isomers
molecular orbital
halogenation
4. Compounds with halogen
gauche conformation
Haloalkane
disproportionation
enantiomer
5. N - l - ml - ms
quantum numbers
peroxycarboxylic acid
aprotic solvent
allyl
6. Charged - need electrons
alcohol
combustion - disproportionation - free - radical substitution - pyrolysis
electrophile
halogen
7. How many stereoisomers can a molecule have with n chiral centers
configuration
allyl
2^n
oxidation
8. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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9. Carbon with four different substituents and lack a plane of symmetry
primary carbon
Haloalkane
chiral center
enantiomer
10. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
specific rotation
propionaldehyde
oxidizing
carboxylic acid
11. Methyl are 60 degrees apart. kinda stable
initiation propagation termination
y- root - en -x-yne
gauche conformation
catalytic hydrogenation
12. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
Combustion
electrophilic addition of free radicals
catalytic hydrogenation
protic solvent
13. 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.
triple bond
electrophile
molecular orbital
cold potassium permanganate
14. Two hydroxyl groups
Vinyl
cold potassium permanganate
Combustion
diol
15. Object that is not superimposable upon mirror image
Alkane nomenclature
chiral
protic solvent
optical activity
16. Spatial arrangement of the atoms or groups of a sterioisomer
alcohol
y- root - en -x-yne
configuration
Vinyl
17. 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
Alkene
isomer
not ignored
18. If reagent has a bunch of oxygen
acetaldehyde
potassium permanganate
halogenation
oxidation
19. What is produced when o3 with lialh4 or nabh4
cold potassium permanganate
alcohol
ring strain
formaldehyde
20. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
triple bond
protic solvent
electrophilic addition of X2
electrophilic addition
21. Same molecular formula but different structure
isomer
ozonolysis
y- root - en -x-yne
protic solvent
22. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
basicity
allyl
lindlar's catalyst
meso compound
23. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
peroxycarboxylic acid
torsional strain
eclipsed conformation
nucleophile
24. When bond angles deviate from ideal values
Ignored
reducing
angle strain
Alkane
25. 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
nucleophile
molecular orbital
sp
26. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
aldehyde
carboxylic acid
triple bond
relative configuration
27. Rotations cancel each other out therefore no optical activity
potassium permanganate
propionaldehyde
Alkane nomenclature
racemic mixture
28. Name for propanal
methylene
propionaldehyde
Alkane nomenclature
disproportionation
29. F - CL - Br - I
ozonolysis
absolute configuration
halogen
vicinal
30. Name for ethanal
Haloalkane
acetaldehyde
sp3
hybridization
31. Transfer of electrions from one atome to another
nucleophile
amines
ionic bond
reducing
32. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
vicinal
relative configuration
diastereomers
hydroboration
33. 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.
vicinal
nonbonded strain
quantum numbers
anti conformation
34. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
Ignored
sp
eclipsed conformation
nucleophile
35. 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-
initiation propagation termination
enantiomer
isomer
amines
36. Name for mathanal
diol
formaldehyde
catalytic hydrogenation
enantiomer
37. Sharing of electron between atoms
racemic mixture
electrophilic addition of H2O
C3H8 + 5O2 = 3CO2 + 4H2O + heat
covalent bond
38. Carbon double bonded to an oxygen
markovnikov's rule
carbonyl
basicity
geminal
39. Most favorable of staggared conformations
anti conformation
racemic mixture
potassium permanganate
isomer
40. Not solvated
ozonolysis
reducing
methylene
aprotic solvent
41. Iso - neo - cyclo
electrophilic addition of X2
not ignored
catalytic hydrogenation
C3H8 + 5O2 = 3CO2 + 4H2O + heat
42. Highest energy no separation. or 120 separation.
primary carbon
achiral
eclipsed conformation
saturated hydrocarbon
43. A = observed rotation / concentration * length
specific rotation
sp
covalent bond
Alkane
44. A molecule with an internal plane of symmetry
meso compound
ozonolysis
2^n
initiation propagation termination
45. Use the Greek root for the number of carbons followed by the ending - - ane
Alkane nomenclature
pi bond
geometric isomers
initiation propagation termination
46. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
racemic mixture
carboxylic acid
sigma bond
cold potassium permanganate
47. M - chloroperoxybenzoic acid
isomer
mcpba
achiral
ring flip
48. 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
alkyne
ozonolysis
pyrolysis
angle strain
49. Carbonyl located in middle or somewhere in chane. Named with One
alcohol
weak bases
configuration
ketone
50. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
C3H8 + 5O2 = 3CO2 + 4H2O + heat
relative configuration
geometric isomers
aldehyde