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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. Rotations cancel each other out therefore no optical activity
enantiomer
racemic mixture
Alkyne
oxidizing
2. 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-
optical activity
geminal
amines
ionic bond
3. Carbon carbon triple bonds. Suffix-yne.
pi bond
Alkyne
enantiomer
triple bond
4. F - CL - Br - I
Haloalkane
sp3
halogen
enantiomer
5. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
carboxylic acid
aldehyde
peroxycarboxylic acid
fischer projection
6. Functionality is specified by alkoxy- prefix. ROR
ethers
specific rotation
geminal
ionic bond
7. Carbonyl located in middle or somewhere in chane. Named with One
triple bond
aprotic solvent
ketone
not ignored
8. Compounds with halogen
not ignored
hot - acidic potassium permanganate
amines
Haloalkane
9. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
disproportionation
saturated hydrocarbon
electrophilic addition of H2O
molecular orbital
10. Name for propanal
ozonolysis
quantum numbers
propionaldehyde
lindlar's catalyst
11. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
absolute configuration
y- root - en -x-yne
electrophile
sp2
12. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
specific rotation
Ignored
absolute configuration
sp2
13. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
y- root - en -x-yne
hybridization
protic solvent
peroxycarboxylic acid
14. A molecule with an internal plane of symmetry
carbonyl
meso compound
absolute configuration
ketone
15. Monosubstituted ethylene
hot - acidic potassium permanganate
Vinyl
potassium permanganate
ionic bond
16. 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.
Ignored
nonbonded strain
Alkene
vicinal
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
Vinyl
hybridization
protic solvent
2^n
18. Nucleus lover. electron rich species that are attracked to charged atoms
ozonolysis
enantiomer
torsional strain
nucleophile
19. Arise from angle strain - torsional strian and nonbonded strain
ring strain
amines
covalent bond
peroxycarboxylic acid
20. One s and two p 120 degree apart
hot - acidic potassium permanganate
sp2
weak bases
Ignored
21. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
electrophilic addition of HX
meso compound
molecular orbital
Combustion
22. Lowest priority group projects into the page
fischer projection
sp2
optical activity
halogen
23. Iso - neo - cyclo
not ignored
geminal
electrophile
triple bond
24. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
2^n
achiral
electrophilic addition of X2
diastereomers
25. Name for mathanal
eclipsed conformation
basicity
catalytic hydrogenation
formaldehyde
26. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
racemic mixture
y- root - en -x-yne
halogenation
Alkane
27. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
combustion - disproportionation - free - radical substitution - pyrolysis
saturated hydrocarbon
Combustion
optical activity
28. Goal is to produce most stable carbocation
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29. Kmno4
catalytic hydrogenation
achiral
angle strain
potassium permanganate
30. How many stereoisomers can a molecule have with n chiral centers
not ignored
2^n
propionaldehyde
Alkane
31. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
ring strain
weak bases
ozonolysis
geometric isomers
32. N - l - ml - ms
achiral
Alkene
quantum numbers
electrophilic addition
33. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
molecular orbital
Alkene
primary carbon
carbonyl
34. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
initiation propagation termination
reducing
enantiomer
optical activity
35. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
C3H8 + 5O2 = 3CO2 + 4H2O + heat
markovnikov's rule
hot - acidic potassium permanganate
formaldehyde
36. Use the Greek root for the number of carbons followed by the ending - - ane
geometric isomers
Alkane nomenclature
quantum numbers
protic solvent
37. Hydrocarbon with one or more carbon carbon triple bond
cold potassium permanganate
alkyne
sp3
specific rotation
38. When boat flips
cold potassium permanganate
ring flip
torsional strain
absolute configuration
39. One s and three p orbitals
sp3
vicinal
aprotic solvent
ketone
40. When bond angles deviate from ideal values
saturated hydrocarbon
angle strain
molecular orbital
alkyne
41. Transfer of electrions from one atome to another
racemic mixture
methylene
oxidizing
ionic bond
42. Methyl are 60 degrees apart. kinda stable
diol
sp
hybridization
gauche conformation
43. Common name for ethyne
C3H8 + 5O2 = 3CO2 + 4H2O + heat
chiral
diol
Acetylene
44. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
Vinyl
aldehyde
isomer
hydroboration
45. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
halogen
stereoisomers
mcpba
aldehyde
46. 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.
Acetylene
diastereomers
meso compound
conformational isomer
47. Results when cyclic molecules must assume conformations that have eclipsed interactions
amines
torsional strain
methylene
disproportionation
48. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
polymerization
markovnikov's rule
peroxycarboxylic acid
electrophilic addition of H2O
49. Highest energy no separation. or 120 separation.
primary carbon
eclipsed conformation
relative configuration
electrophilic addition of H2O
50. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
sigma bond
cold potassium permanganate
geometric isomers
ring strain