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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. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
electrophilic addition of free radicals
Haloalkane
basicity
hybridization
2. Combustion reaction occurs through a radical process
C3H8 + 5O2 = 3CO2 + 4H2O + heat
amines
fischer projection
achiral
3. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
Alkyne
catalytic hydrogenation
Combustion
oxidizing
4. Is bonded to only one other carbon atom
hydroboration
hybridization
aldehyde
primary carbon
5. When bond angles deviate from ideal values
y- root - en -x-yne
triple bond
angle strain
stereoisomers
6. If a compound is able to rotate plane polarized light.
specific rotation
nonbonded strain
optical activity
Alkene
7. Highest energy no separation. or 120 separation.
eclipsed conformation
absolute configuration
diol
pyrolysis
8. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
electrophilic addition of HX
carbonyl
Combustion
oxidation
9. Steps of free radical substitution
covalent bond
ring strain
initiation propagation termination
electrophile
10. One s and two p 120 degree apart
specific rotation
sp2
hydroboration
vicinal
11. A = observed rotation / concentration * length
alcohol
methylene
pi bond
specific rotation
12. What are the best leaving groups?
torsional strain
weak bases
cold potassium permanganate
ketone
13. 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
achiral
catalytic hydrogenation
propionaldehyde
geometric isomers
14. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
angle strain
weak bases
y- root - en -x-yne
achiral
15. Two hydroxyl groups
vicinal
sp
diol
initiation propagation termination
16. Hydrocarbon with one or more carbon carbon triple bond
chiral
triple bond
alkyne
electrophilic addition of H2O
17. Compounds with halogen
Alkene
cold potassium permanganate
Haloalkane
ring strain
18. 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
isomer
sigma bond
Alkyne
19. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
electrophilic addition of X2
enantiomer
achiral
2^n
20. Methyl are 60 degrees apart. kinda stable
Alkane nomenclature
weak bases
gauche conformation
polymerization
21. Not solvated
electrophile
aprotic solvent
sp2
sp
22. Formed by mixing different types of orbitals
aldehyde
weak bases
mcpba
hybridization
23. No double bonds. it has the maximum number of hydrogens.
Haloalkane
electrophilic addition
oxidation
saturated hydrocarbon
24. Lowest priority group projects into the page
fischer projection
ring flip
absolute configuration
methylene
25. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
ozonolysis
weak bases
geometric isomers
halogenation
26. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
hydroboration
ozonolysis
amines
electrophilic addition of H2O
27. 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
formaldehyde
isomer
protic solvent
specific rotation
28. Functionality is specified by alkoxy- prefix. ROR
sp2
Alkane
halogenation
ethers
29. Iso - neo - cyclo
Vinyl
angle strain
not ignored
enantiomer
30. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
aprotic solvent
geometric isomers
ozonolysis
sp
31. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
electrophilic addition
molecular orbital
racemic mixture
isomer
32. 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.
molecular orbital
eclipsed conformation
enantiomer
electrophilic addition of free radicals
33. F - CL - Br - I
halogen
disproportionation
anti conformation
stereoisomers
34. Kmno4
Alkane nomenclature
potassium permanganate
amines
oxidation
35. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
acetaldehyde
enantiomer
carboxylic acid
sp3
36. Name for ethanal
primary carbon
ketone
ozonolysis
acetaldehyde
37. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
Combustion
amines
pi bond
electrophilic addition of H2O
38. Refers to the =CH2 group
nucleophile
specific rotation
Vinyl
methylene
39. A sigma bond and two pi bonds
triple bond
ozonolysis
torsional strain
alkyne
40. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
structural isomers
electrophilic addition of free radicals
alcohol
ozonolysis
41. M - chloroperoxybenzoic acid
Alkyne
weak bases
protic solvent
mcpba
42. Zn/h or CH3/s with ozonolysis
triple bond
quantum numbers
conformational isomer
reducing
43. Name for propanal
configuration
propionaldehyde
electrophilic addition of HX
vicinal
44. Carbon carbon triple bonds. Suffix-yne.
racemic mixture
acetaldehyde
Alkyne
allyl
45. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
basicity
peroxycarboxylic acid
Alkane nomenclature
carbonyl
46. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
disproportionation
Ignored
markovnikov's rule
ketone
47. Rotations cancel each other out therefore no optical activity
carboxylic acid
ring flip
not ignored
racemic mixture
48. Di - tri - t - sec - n -
Combustion
Ignored
acetaldehyde
potassium permanganate
49. Goal is to produce most stable carbocation
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50. Spatial arrangement of the atoms or groups of a sterioisomer
sigma bond
hybridization
ring flip
configuration