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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. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
weak bases
angle strain
acetaldehyde
geometric isomers
2. Hydrocarbon with one or more carbon carbon triple bond
ring flip
sp2
alkyne
conformational isomer
3. Share molecular formula but have different chemical and physical properties
hybridization
electrophilic addition of HX
sp2
structural isomers
4. Functionality is specified by alkoxy- prefix. ROR
ethers
quantum numbers
specific rotation
potassium permanganate
5. 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
electrophilic addition of free radicals
catalytic hydrogenation
combustion - disproportionation - free - radical substitution - pyrolysis
6. Nucleus lover. electron rich species that are attracked to charged atoms
nucleophile
combustion - disproportionation - free - radical substitution - pyrolysis
acetaldehyde
geminal
7. 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
alcohol
allyl
hydroboration
8. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
nonbonded strain
meso compound
catalytic hydrogenation
stereoisomers
9. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
ring strain
Combustion
C3H8 + 5O2 = 3CO2 + 4H2O + heat
sigma bond
10. What are the best leaving groups?
primary carbon
halogen
weak bases
torsional strain
11. Rotations cancel each other out therefore no optical activity
racemic mixture
torsional strain
triple bond
methylene
12. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
fischer projection
eclipsed conformation
pi bond
electrophilic addition of free radicals
13. Is bonded to only one other carbon atom
aprotic solvent
absolute configuration
primary carbon
Vinyl
14. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
oxidizing
electrophilic addition of free radicals
electrophilic addition of X2
alcohol
15. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
ozonolysis
enantiomer
disproportionation
reducing
16. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
Haloalkane
torsional strain
electrophilic addition of X2
specific rotation
17. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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18. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
sp3
enantiomer
mcpba
y- root - en -x-yne
19. A molecule with an internal plane of symmetry
meso compound
propionaldehyde
saturated hydrocarbon
covalent bond
20. O3
methylene
mcpba
initiation propagation termination
ozonolysis
21. Chain of carbons connected by single bonds with hydrogen atoms attached.
Alkane
relative configuration
electrophilic addition
Alkene
22. One s and two p 120 degree apart
hybridization
eclipsed conformation
electrophilic addition of free radicals
sp2
23. 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.
protic solvent
geometric isomers
diastereomers
acetaldehyde
24. Di - tri - t - sec - n -
Ignored
racemic mixture
electrophile
gauche conformation
25. Alphabetical order of alkane rxn
enantiomer
combustion - disproportionation - free - radical substitution - pyrolysis
Vinyl
methylene
26. Carbon double bonded to an oxygen
carbonyl
eclipsed conformation
initiation propagation termination
oxidation
27. Compounds with halogen
ring strain
Haloalkane
stereoisomers
molecular orbital
28. Carbon with four different substituents and lack a plane of symmetry
meso compound
chiral center
Alkene
nonbonded strain
29. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
meso compound
alcohol
aldehyde
ketone
30. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
nucleophile
formaldehyde
peroxycarboxylic acid
Alkene
31. Lowest priority group projects into the page
electrophilic addition of H2O
fischer projection
stereoisomers
meso compound
32. Sharing of electron between atoms
carbonyl
covalent bond
absolute configuration
angle strain
33. Charged - need electrons
specific rotation
alcohol
chiral
electrophile
34. Most favorable of staggared conformations
alkyne
anti conformation
ozonolysis
gauche conformation
35. A = observed rotation / concentration * length
cold potassium permanganate
specific rotation
ring strain
Combustion
36. If reagent has a bunch of oxygen
Alkyne
Alkane
oxidation
structural isomers
37. Same molecular formula but different structure
Alkane nomenclature
y- root - en -x-yne
isomer
specific rotation
38. Arise from angle strain - torsional strian and nonbonded strain
gauche conformation
pyrolysis
ring strain
isomer
39. Highest energy no separation. or 120 separation.
eclipsed conformation
Haloalkane
ethers
formaldehyde
40. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
sp
torsional strain
isomer
mcpba
41. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
carboxylic acid
oxidizing
configuration
cold potassium permanganate
42. No double bonds. it has the maximum number of hydrogens.
structural isomers
conformational isomer
saturated hydrocarbon
halogenation
43. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
oxidizing
combustion - disproportionation - free - radical substitution - pyrolysis
hot - acidic potassium permanganate
pi bond
44. 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.
isomer
carboxylic acid
mcpba
molecular orbital
45. 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-
amines
hydroboration
electrophilic addition
specific rotation
46. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
pyrolysis
ozonolysis
gauche conformation
markovnikov's rule
47. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
sp
saturated hydrocarbon
quantum numbers
relative configuration
48. Steps of free radical substitution
initiation propagation termination
achiral
carboxylic acid
weak bases
49. One s and three p orbitals
configuration
sp3
aldehyde
sp2
50. Diols with hydroxyl group on adjacent carbon
diastereomers
allyl
vicinal
stereoisomers