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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. Functionality is specified by alkoxy- prefix. ROR
fischer projection
ethers
relative configuration
Acetylene
2. Methyl are 60 degrees apart. kinda stable
Alkane nomenclature
gauche conformation
cold potassium permanganate
ozonolysis
3. A = observed rotation / concentration * length
alcohol
specific rotation
protic solvent
acetaldehyde
4. Rotations cancel each other out therefore no optical activity
sigma bond
geminal
diastereomers
racemic mixture
5. Sharing of electron between atoms
chiral center
covalent bond
aldehyde
catalytic hydrogenation
6. What is produced when o3 with lialh4 or nabh4
conformational isomer
diastereomers
sp
alcohol
7. Nucleus lover. electron rich species that are attracked to charged atoms
electrophilic addition of HX
triple bond
fischer projection
nucleophile
8. Two hydroxyl groups
electrophilic addition of free radicals
diol
sp3
basicity
9. Share molecular formula but have different chemical and physical properties
halogenation
potassium permanganate
structural isomers
Vinyl
10. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
Combustion
y- root - en -x-yne
ring flip
weak bases
11. 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.
alkyne
acetaldehyde
structural isomers
diastereomers
12. Common name for ethyne
lindlar's catalyst
Acetylene
triple bond
oxidizing
13. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
Haloalkane
geminal
electrophilic addition of HX
cold potassium permanganate
14. Kmno4
hydroboration
potassium permanganate
sp
carboxylic acid
15. When boat flips
alcohol
ring flip
diastereomers
triple bond
16. Zn/h or CH3/s with ozonolysis
ozonolysis
reducing
torsional strain
peroxycarboxylic acid
17. Use the Greek root for the number of carbons followed by the ending - - ane
saturated hydrocarbon
electrophile
halogen
Alkane nomenclature
18. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
molecular orbital
disproportionation
carbonyl
chiral center
19. What are the best leaving groups?
aprotic solvent
chiral
nucleophile
weak bases
20. Most favorable of staggared conformations
combustion - disproportionation - free - radical substitution - pyrolysis
anti conformation
sp2
basicity
21. If reagent has a bunch of oxygen
ring flip
amines
oxidation
Ignored
22. 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
electrophilic addition of H2O
propionaldehyde
Alkane
allyl
23. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
C3H8 + 5O2 = 3CO2 + 4H2O + heat
achiral
electrophilic addition of HX
chiral
24. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
enantiomer
diol
basicity
electrophilic addition
25. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
electrophile
Alkane
reducing
hot - acidic potassium permanganate
26. Hydrocarbon with one or more carbon carbon triple bond
polymerization
alkyne
geminal
electrophilic addition
27. 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-
polymerization
amines
hydroboration
configuration
28. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
ozonolysis
amines
Haloalkane
electrophilic addition
29. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
Combustion
carboxylic acid
electrophilic addition of H2O
structural isomers
30. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
ring flip
alcohol
geometric isomers
Alkene
31. Diols with hydroxyl group on adjacent carbon
vicinal
hot - acidic potassium permanganate
sigma bond
electrophile
32. 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
stereoisomers
diol
cold potassium permanganate
33. F - CL - Br - I
halogen
geminal
basicity
primary carbon
34. Name for mathanal
formaldehyde
Ignored
ethers
eclipsed conformation
35. Highest energy no separation. or 120 separation.
eclipsed conformation
gauche conformation
potassium permanganate
ozonolysis
36. Combustion reaction occurs through a radical process
C3H8 + 5O2 = 3CO2 + 4H2O + heat
sp
structural isomers
Ignored
37. M - chloroperoxybenzoic acid
Ignored
mcpba
Alkane
hybridization
38. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
stereoisomers
polymerization
electrophilic addition
hydroboration
39. Is bonded to only one other carbon atom
achiral
Alkane nomenclature
Alkene
primary carbon
40. If a compound is able to rotate plane polarized light.
electrophilic addition of X2
gauche conformation
optical activity
propionaldehyde
41. 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
reducing
propionaldehyde
triple bond
catalytic hydrogenation
42. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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43. 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.
cold potassium permanganate
triple bond
Alkene
molecular orbital
44. Diol with hydroxyl group on same carbon
hydroboration
geminal
structural isomers
vicinal
45. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
aldehyde
electrophilic addition of H2O
gauche conformation
carbonyl
46. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
halogenation
covalent bond
formaldehyde
sigma bond
47. How many stereoisomers can a molecule have with n chiral centers
formaldehyde
2^n
potassium permanganate
configuration
48. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
ethers
covalent bond
achiral
Vinyl
49. Steps of free radical substitution
potassium permanganate
initiation propagation termination
achiral
optical activity
50. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
relative configuration
electrophilic addition of H2O
alkyne
chiral