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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. Monosubstituted ethylene
ionic bond
Vinyl
molecular orbital
optical activity
2. Name for propanal
anti conformation
alkyne
propionaldehyde
ionic bond
3. Lowest priority group projects into the page
eclipsed conformation
propionaldehyde
fischer projection
quantum numbers
4. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
Alkene
specific rotation
saturated hydrocarbon
enantiomer
5. How many stereoisomers can a molecule have with n chiral centers
2^n
peroxycarboxylic acid
absolute configuration
lindlar's catalyst
6. Highest energy no separation. or 120 separation.
eclipsed conformation
not ignored
ozonolysis
structural isomers
7. Results when cyclic molecules must assume conformations that have eclipsed interactions
torsional strain
combustion - disproportionation - free - radical substitution - pyrolysis
nonbonded strain
cold potassium permanganate
8. If reagent has a bunch of oxygen
oxidation
chiral center
molecular orbital
diol
9. Spatial arrangement of the atoms or groups of a sterioisomer
configuration
ozonolysis
absolute configuration
angle strain
10. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
diol
peroxycarboxylic acid
C3H8 + 5O2 = 3CO2 + 4H2O + heat
Vinyl
11. Carbon double bonded to an oxygen
ring strain
carbonyl
peroxycarboxylic acid
not ignored
12. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
catalytic hydrogenation
oxidizing
conformational isomer
carbonyl
13. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
specific rotation
2^n
acetaldehyde
hydroboration
14. Compounds with halogen
Vinyl
conformational isomer
fischer projection
Haloalkane
15. Share molecular formula but have different chemical and physical properties
diastereomers
carbonyl
structural isomers
angle strain
16. 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.
diastereomers
Vinyl
sigma bond
carbonyl
17. 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
protic solvent
torsional strain
eclipsed conformation
relative configuration
18. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
Ignored
anti conformation
absolute configuration
Alkene
19. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
electrophilic addition of H2O
amines
triple bond
geminal
20. 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-
ethers
gauche conformation
amines
diastereomers
21. One s and three p orbitals
basicity
Ignored
sp3
alkyne
22. Common name for ethyne
polymerization
aprotic solvent
disproportionation
Acetylene
23. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
hot - acidic potassium permanganate
Alkene
achiral
electrophilic addition
24. Is bonded to only one other carbon atom
diol
nonbonded strain
primary carbon
quantum numbers
25. Nucleus lover. electron rich species that are attracked to charged atoms
primary carbon
nucleophile
formaldehyde
oxidizing
26. Methyl are 60 degrees apart. kinda stable
ionic bond
carboxylic acid
gauche conformation
primary carbon
27. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
enantiomer
stereoisomers
triple bond
racemic mixture
28. Name for mathanal
racemic mixture
specific rotation
formaldehyde
Alkane nomenclature
29. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
reducing
electrophilic addition of HX
relative configuration
vicinal
30. Carbon with four different substituents and lack a plane of symmetry
chiral center
aldehyde
hot - acidic potassium permanganate
sp2
31. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
peroxycarboxylic acid
chiral
aldehyde
ozonolysis
32. N - l - ml - ms
protic solvent
halogenation
quantum numbers
alcohol
33. Carbonyl located in middle or somewhere in chane. Named with One
ketone
C3H8 + 5O2 = 3CO2 + 4H2O + heat
anti conformation
aldehyde
34. Rotations cancel each other out therefore no optical activity
methylene
angle strain
racemic mixture
Alkane
35. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
lindlar's catalyst
hot - acidic potassium permanganate
not ignored
geometric isomers
36. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
ring strain
achiral
protic solvent
sigma bond
37. Goal is to produce most stable carbocation
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38. Use the Greek root for the number of carbons followed by the ending - - ane
optical activity
Alkane nomenclature
Alkane
hybridization
39. M - chloroperoxybenzoic acid
Alkyne
alkyne
C3H8 + 5O2 = 3CO2 + 4H2O + heat
mcpba
40. Refers to the =CH2 group
methylene
hot - acidic potassium permanganate
polymerization
alcohol
41. Same molecular formula but different structure
achiral
isomer
protic solvent
angle strain
42. Steps of free radical substitution
Acetylene
initiation propagation termination
aldehyde
halogen
43. If a compound is able to rotate plane polarized light.
pyrolysis
Haloalkane
electrophilic addition of free radicals
optical activity
44. Arise from angle strain - torsional strian and nonbonded strain
torsional strain
absolute configuration
Alkane
ring strain
45. Formed by mixing different types of orbitals
hydroboration
achiral
hybridization
alcohol
46. 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
sp
specific rotation
ionic bond
pyrolysis
47. What are the best leaving groups?
electrophilic addition of HX
halogenation
weak bases
eclipsed conformation
48. Carbon carbon triple bonds. Suffix-yne.
Alkyne
carbonyl
halogen
fischer projection
49. 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
eclipsed conformation
allyl
optical activity
nucleophile
50. 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
racemic mixture
acetaldehyde
reducing