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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. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
electrophilic addition of X2
alcohol
gauche conformation
electrophilic addition of HX
2. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
ozonolysis
methylene
geometric isomers
ozonolysis
3. Arise from angle strain - torsional strian and nonbonded strain
aldehyde
ring strain
y- root - en -x-yne
allyl
4. Compounds with halogen
peroxycarboxylic acid
geminal
Haloalkane
methylene
5. Share molecular formula but have different chemical and physical properties
electrophilic addition of HX
structural isomers
Haloalkane
combustion - disproportionation - free - radical substitution - pyrolysis
6. If reagent has a bunch of oxygen
Alkene
Alkyne
oxidation
electrophilic addition of H2O
7. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
Alkane
formaldehyde
electrophilic addition of free radicals
halogenation
8. Iso - neo - cyclo
polymerization
enantiomer
vicinal
not ignored
9. Same molecular formula but different structure
Vinyl
isomer
halogen
reducing
10. Functionality is specified by alkoxy- prefix. ROR
angle strain
Acetylene
molecular orbital
ethers
11. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
halogenation
Vinyl
sigma bond
oxidation
12. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
C3H8 + 5O2 = 3CO2 + 4H2O + heat
fischer projection
oxidizing
covalent bond
13. Combustion reaction occurs through a radical process
C3H8 + 5O2 = 3CO2 + 4H2O + heat
oxidation
ionic bond
reducing
14. Name for ethanal
absolute configuration
acetaldehyde
Alkane nomenclature
molecular orbital
15. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
disproportionation
aldehyde
alkyne
achiral
16. No double bonds. it has the maximum number of hydrogens.
potassium permanganate
mcpba
alcohol
saturated hydrocarbon
17. Refers to the =CH2 group
methylene
halogenation
enantiomer
ring flip
18. 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
chiral
allyl
catalytic hydrogenation
absolute configuration
19. When bond angles deviate from ideal values
vicinal
angle strain
molecular orbital
cold potassium permanganate
20. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
formaldehyde
amines
potassium permanganate
electrophilic addition of H2O
21. Common name for ethyne
achiral
Alkene
acetaldehyde
Acetylene
22. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
quantum numbers
angle strain
primary carbon
absolute configuration
23. Goal is to produce most stable carbocation
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24. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
relative configuration
saturated hydrocarbon
not ignored
electrophilic addition of free radicals
25. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
disproportionation
allyl
quantum numbers
amines
26. If a compound is able to rotate plane polarized light.
enantiomer
optical activity
achiral
mcpba
27. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
electrophilic addition of X2
electrophilic addition of HX
meso compound
enantiomer
28. One s and two p 120 degree apart
allyl
sp2
halogenation
diol
29. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
sp3
stereoisomers
electrophilic addition of free radicals
not ignored
30. Zn/h or CH3/s with ozonolysis
combustion - disproportionation - free - radical substitution - pyrolysis
sigma bond
saturated hydrocarbon
reducing
31. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
relative configuration
electrophile
achiral
peroxycarboxylic acid
32. 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
covalent bond
enantiomer
electrophilic addition of H2O
specific rotation
33. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
amines
ring flip
electrophilic addition
Alkane nomenclature
34. N - l - ml - ms
quantum numbers
gauche conformation
initiation propagation termination
meso compound
35. Sharing of electron between atoms
Alkyne
covalent bond
vicinal
molecular orbital
36. Highest energy no separation. or 120 separation.
oxidizing
eclipsed conformation
carboxylic acid
basicity
37. Carbon carbon triple bonds. Suffix-yne.
allyl
saturated hydrocarbon
electrophile
Alkyne
38. Rotations cancel each other out therefore no optical activity
Alkane
aldehyde
racemic mixture
Alkane nomenclature
39. Object that is not superimposable upon mirror image
chiral
nonbonded strain
methylene
ketone
40. Nucleus lover. electron rich species that are attracked to charged atoms
diastereomers
basicity
nucleophile
electrophilic addition of H2O
41. Diols with hydroxyl group on adjacent carbon
vicinal
Haloalkane
racemic mixture
molecular orbital
42. What are the best leaving groups?
weak bases
aldehyde
halogenation
Alkane nomenclature
43. Lowest priority group projects into the page
Alkene
halogen
fischer projection
Alkane
44. Two hydroxyl groups
aprotic solvent
diol
ethers
basicity
45. Alphabetical order of alkane rxn
not ignored
Alkene
combustion - disproportionation - free - radical substitution - pyrolysis
Acetylene
46. How many stereoisomers can a molecule have with n chiral centers
ozonolysis
2^n
Vinyl
reducing
47. A = observed rotation / concentration * length
specific rotation
primary carbon
y- root - en -x-yne
ozonolysis
48. Not solvated
2^n
anti conformation
aprotic solvent
pi bond
49. O3
saturated hydrocarbon
ring strain
Acetylene
ozonolysis
50. 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
oxidation
electrophilic addition of HX
catalytic hydrogenation
peroxycarboxylic acid