Organic Chemistry Questions
(Sticky Note comment Patrick Gormley
11/2/1997 6:43:04 PM
Submitted by:
Patrick Gormley
Lapeer East High School
Lapeer MI
patrickg@mail.si.umich.edu)
___ 1. Molecules of 1-propanol and 2-propanol have different (1) percentage comp
ositions;
(2) molecular masses; (3) molecular formulas; (4) structural formulas.
___ 2. Which compound is an organic acid? (1) CH3CH2OH; (2) CH3OCH3; (3) CH3COOH
;
(4) CH3COOCH3.
___ 3. Each member of the alkane series differs from the preceding member by one
additional
carbon atom and (1) 1 hydrogen atom; (2) 2 hydrogen atoms; (3) 3 hydrogen
atoms; (4) 4 hydrogen atoms.
___ 4. Which formula represents a saturated hydrocarbon? (1) C2H2; (2) C2H4; (3)
C3H6;
(4) C3H8.
___ 5. The members of the alkane series of hydrocarbons are similar in that each
member
has the same (1) empirical formula; (2) general formula; (3) structural formula;
(4) molecular formula.
___ 6. What could be the name of a compound that has the general formula R-OH? (
1) methanol;
(2) methane; (3) methyl methanoate; (4) methanoic acid.
___ 7. A compound with the formula C6H6 is (1) toluene; (2) benzene; (3) butene;
(4) pentene.
___ 8. C2H4 + H2 <======> C2H6 The above reaction is an example of (1) addition;
(2) substitution; (3) saponification; (4) esterification.
___ 9. The compound C4H9OH is an isomer of (1) C3H7COCH3; (2) C2H5OC2H5;
(3) CH3COOC2H5; (4) CH3COOH.
___ 10. What is the total number of carbon atoms contained in an ethyl group? (1
) 1;
(2) 2; (3) 3; (4) 4.
___ 11. Which compound is a member of the alkane series? (1) C2H6; (2) C3H6; (3)
C4H6;
(4) C6H6.
___ 12. A reaction between an acid and alcohol produces an ester and (1) carbon
dioxide;
(2) water; (3) glycerol; (4) ethanol.
___ 13. The general formula for the alkyne series is (1) C H ; (2) C ; (3) C ;
n nnH2nnH2n+2
(4) Cn
H2n-2.
___ 14. Which compound represents a member of the benzene series? (1) acetylene;
(2) ethylene; (3) toluene; (4) propene.
___ 15. Which compound is an isomer of CH3COOH? (1) HCOOCH3; (2) CH3CH2OH;
(3) CH3CH2COOH; (4) CH3COOCH3.
___ 16. Which compound is a member of the alkene series? (1) benzene; (2) acetyl
ene;
(3) toluene; (4) ethene.
___ 17. All carbon-carbon bonds in a saturated hydrocarbon molecule are (1) sing
le
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covalent; (2) double covalent; (3) triple covalent; (4) coordinate covalent.
___ 18.
Which normal alkene has the highest boiling point at 1 atmosphere? (1) C2H4;
(2) C3; (3) C4; (4) C5
H6H8H10.
___ 19. Which reaction produces ethyl alcohol as one of the principal products?
(1) an
esterification reaction; (2) a neutralization reaction; (3) a saponification rea
ction;
(4) a fermentation reaction.
___ 20.
Given the following reaction: C4 + Br2 <======> C4H9Br + HBr. The above
H10
reaction is an example of (1) substitution; (2) addition; (3) polymerization;
(4) fermentation.
___ 21.
In a molecule of C3H8, the total number of covalent bonds is (1) 11; (2) 10; (3)
3;
(4) 8.
___ 22.
Which compound is an ester? (1) CH3COOH; (2) CH3CHO; (3) CH3COOCH3;
(4) CH3COCH3.
___ 23.
The fermentation of C6 will produce carbon dioxide and (1) a polymer; (2) a
H12O6
soap; (3) an ester; (4) an alcohol.
___ 24. Compounds which have the same molecular formula but different molecular
structures
are called (1) isomers; (2) isotopes; (3) allotropes; (4) homologs.
___ 25.
Which is the formula of a saturated hydrocarbon? (1) C2H2; (2) C2H4; (3) C5H8;
(4) C5
H12.
___ 26.
C is the general formula of a homologous series. Which is a member with this
nH2n+2
characteristic? (1) acetylene; (2) benzene; (3) propane; (4) toluene.
___ 27.
A molecule of ethene is similar to a molecule of methane in that they both have
the
same (1) structural formula; (2) molecular formula; (3) number of carbon atoms;
(4) number of hydrogen atoms.
___ 28. Which is the formula for ethanoic acid? (1) CH3COOH; (2) CH3CH2OH;
(3) CH3CH2COOH; (4) CH3CH2CH2OH.
___ 29. The compound CH3COOCH3 is classified as (1) an acid; (2) an alcohol; (3)
an
ester; (4) a hydrocarbon.
___ 30.
Each member in the alkane series of hydrocarbons, when considered in successive
order, has 1 more carbon atom and how many more hydrogen atoms? (1) 1; (2) 2;
(3) 3; (4) 4.
___ 31.
Which molecular formula represents pentene? (1) ; (2) ; (3) ;
C4H8C4H10C5H10
(4) C5
H12.
___ 32.
A molecule of which alcohol contains more than one hydroxyl group? (1) propanol;
(2) butanol; (3) pentanol; (4) glycerol.
___ 33.
Hydrogen bonding is most noticable in (1) organic acids; (2) esters; (3) alkynes
;
(4) alkanes.
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___ 34.
Which molecule contains a triple covalent bond? (1) C2H2; (2) C2H4; (3) C3H6;
(4) C3H8.
___ 35.
Which formula represents an acid? (1) CH3COOCH3; (2) CH3OH; (3) CH3COOH;
(4) CH3CH2CH3.
___ 36.
Ethyl formate can be produced by heating concentrated sulfuric acid, ethyl alcoh
ol
and formic acid. This type of reaction is called (1) fermentation; (2) esterific
ation;
(3) saponification; (4) polymerization.
___ 37.
Which formula represents a member of the alkene series? (1) C3H6; (2) C2H6;
(3) C2H2; (4) C6H6.
___ 38. Ethyne (acetylene) has which one of the following shapes? (1) tetrahedra
l; (2) planar
triangular; (3) linear; (4) bent.
___ 39. Compared with organic compounds in general, organic compounds usually ha
ve
(1) greater solubility in water; (2) a tendency to form ions more readily; (3) m
ore
rapid reaction rates; (4) lower melting points.
___ 40.
Which represents the functional group of an organic acid? (1) -COOH; (2) -OR;
(3) -CHO; (4) -NH2.
___ 41. C3H6 + H2 = C3H8 The above reaction is an example of (1) substitution;
(2) addition; (3) polymerization; (4) esterification.
___ 42.
The isomers of propanol differ in (1) the number of carbon atoms; (2) molecular
mass; (3) the arrangement of the carbon atoms; (4) the type of functional group.
___ 43.
Which is the formula of an alcohol? (1) Ba(OH)2; (2) HCHO; (3) CH3COOH;
(4) C5
OH.
H11
___ 44. C3H5(OH)3 The above organic compound is classified as (1) a carbohydrate
;
(2) an ester; (3) an organic acid; (4) an alcohol.
___ 45. Which compound can have isomers? (1) C2H4; (2) C2H2; (3) C2H6; (4) C4H8.
___ 46. C2H4 + Br2 = ? What reaction occurs when the above chemicals react?
(1) polymerization; (2) substitution; (3) addition; (4) esterification.
___ 47. Which organic compound is a product of a fermentation reaction? (1) CCl2
F2;
(2) C2H2; (3) C2H5OH; (4) C2H5OC2H5.
___ 48. Which organic compound is a product of an esterification reaction? (1) C
3H8;
(2) C3H7OH; (3) CH3COOH; (4) CH3COOCH3.
___ 49. Which organic compound is a product of a saponification reaction? (1) CC
l4;
(2) C3(OH)3; (3) C6; (4) C6O6.
H5H6H12
___ 50.
The structure of an alkene contains (1) only single bonds; (2) a double bond;
(3) two double bonds; (4) a triple bond.
___ 51.
As the members of the alkane series increase in molecular mass the magnitude of
the van der Waals forces between the molecules (1) decreases; (2) increases;
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(3) remains the same.
___ 52. Which hydrocarbon has more than one possible structural formula? (1) CH4
;
(2) C2H6; (3) C3H8; (4) C4H10.
___ 53. What is the number of hydrogen atoms in a molecule of ethyne? (1) 6; (2)
2; (3) 8;
(4) 4.
___ 54. In an aqueous solution, which compound will be acidic? (1) CH3COOH; (2)
C3H5(OH)3;
(3) CH3CH2OH; (4) CH3OH.
___ 55. A process in which large molecules are broken down into smaller mole- cu
les is used
commercially to increase the yield of gasoline from petroleum. This process is
called (1) polymerization; (2) hydrogenation; (3) esterification; (4) cracking.
___ 56. Organic compounds must contain (1) oxygen; (2) nitrogen; (3) hydrogen; (
4) carbon.
___ 57. The angle formed between any two carbon-hydrogen bonds in a molecule of
an
organic compound is a(an) (1) dihedral angle; (2) right angle; (3) tetrahedral
angle; (4) acute angle.
___ 58.
A specific arrangement of several atoms which gives characteristic properties to
an
organic molecule is known as a(an) (1) carboxyl group; (2) functional group;
(3) group; (4) alkyl group.
___ 59. The ability of the carbon atom to form covalent bonds result in the form
ation of
compounds that are (1) molecular; (2) ionic; (3) polar; (4) atomic.
___ 60.
How many carbon atoms are in one molecule of 2,3,3-trimethyl- pentane? (1) 5;
(2) 8; (3) 6; (4) 13.
___ 61. The series of unsaturated hydrocarbons containing a triple bond shared b
etween two
adjacent carbon atoms is known as the (1) alkanes; (2) alkenes; (3) alkynes;
(4) benzenes.
___ 62. Addition reactions occur in unsaturated hydrocarbons rather than in satu
rated
hydrocarbons because unsaturated hydrocarbons (1) contain multiple bonds;
(2) have a greater molecular mass; (3) have tetrahedral bonds; (4) contain more
atoms.
___ 63. A dihydroxy alcohol that is made from ethane is (1) ethanol; (2) glycero
l;
(3) ethylene glycol; (4) ethane.
___ 64.
A long chain protein is an example of a(an) (1) fat; (2) polymer; (3) isomer;
(4) monomer.
___ 65.
Which represents an unsaturated hydrocarbon? (1) C2H4; (2) C2H6; (3) C3H8;
(4) C4
H10.
___ 66.
How many double bonds are in one molecule of 1,3-butadiene? (1) 1; (2) 2; (3) 3;
(4) 4.
___ 67. Which is an isomer of 2-chloropropane? (1) butane; (2) propane; (3) 1-ch
lorobutane;
(4) 1-chloropropane.
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___ 68.
A fermentation reaction and a saponification reaction are similar in that they b
oth
can produce (1) an ester; (2) an alcohol; (3) an acid; (4) a soap.
___ 69. Which is a saturated hydrocarbon? (1) C3H8; (2) C6H6; (3) C2H5OH; (4) C2
H4O2.
___ 70. Which molecule will have a single pi bond? (1) benzene; (2) propene; (3)
propane;
(4) propyne.
___ 71. CH3CH2OH The above organic compound is classified as (1) a carbohydrate;
(2) an ester; (3) an alcohol; (4) an organic acid.
___ 72. Which organic molecule undergoes resonance? (1) benzene; (2) propyne; (3
) methane;
(4) ethanol.
___ 73.
As the molecular mass of the compounds of the alkane series increases their boil
ing
points (1) decreases; (2) increases; (3) remains the same.
___ 74.
As the number of carbon atoms in the members of the alkene series increases, the
ratio of carbon atoms to hydrogen atoms (1) decreases; (2) increases; (3) remain
s
the same.
___ 75.
Which compound is most likely to react by addition? (1) CH4; (2) C3H6; (3) C4;
H10
(4) C5
H12.
___ 76. Which alcohol contains three hydroxyl groups per molecule? (1) propanol;
(2) glycerol;
(3) butanol; (4) pentanol.
___ 77.
Toluene belongs to the same series of hydrocarbons as (1) benzene; (2) propene;
(3) pentene; (4) butene.
___ 78. A hydrocarbon molecule containing one triple covalent bond is classified
as an
(1) alkene; (2) alkane; (3) alkyne; (4) alkadiene.
___ 79. Both cellulose and proteins are classified as (1) aldehydes; (2) esters;
(3) polymers;
(4) ketones.
___ 80. The compound 2-propanol is classified as a (1) primary alcohol; (2) seco
ndary
alcohol; (3) tertiary alcohol; (4) dihydroxy alcohol.
___ 81.
What is the total number of hydrogen atoms in a molecule of butene? (1) 10; (2)
8;
(3) 6; (4) 4.
___ 82. Which of the following compounds has the greatest possible number of iso
mers?
(1) butane; (2) ethane; (3) pentane; (4) propane.
___ 83.
Which is the correct molecular formula of pentene? (1) C5H8; (2) C5H10; (3) C5H1
2;
(4) C5
H14.
___ 84. The bonds between the atoms in an organic molecule are generally (1) ion
ic;
(2) coordinate covalent; (3) covalent; (4) hydrogen.
___ 85. As the length of the chain of carbon atoms in molecules of the alkene se
ries
increases, the number of double bonds per molecule (1) decreases; (2) increases;
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(3) remains the same.
___ 86. In a condensation polymerization, the two products formed are a polymer
and
(1) water; (2) carbon dioxide; (3) an acid; (4) a base.
___ 87. Which is the correct molecular formula of 1,2-ethanediol? (1) C2H5OH; (2
) C2H4(OH)2;
(3) C3H5(OH)3; (4) C3H6(OH)2.
___ 88. In the reaction C2H5OH + CH3OH --> C2H5OCH3 + H2O, the organic compound
formed is (1) an ester; (2) a ketone; (3) an acid; (4) an ether.
___ 89. Which compound is a saturated hydrocarbon? (1) ethene; (2) ethane; (3) e
thylene;
(4) ethyne.
___ 90. The compound C2H2 belongs to the series of hydrocarbons with the general
formula
H; (2) C ; (3) C ; (4) C
(1) Cn nnH2nnH2n-2nH2n+2.
___ 91. Which compound is a dihydroxyl alcohol? (1) Al(OH)3; (2) C3H5(OH)3; (3)
Ca(OH)2;
(4) C2H4(OH)2.
___ 92. The name of the compound having the formula C3H5(OH)3 is (1) glycerol; (
2) ethylene
glycol; (3) propene; (4) propanoic acid.
___ 93.
Which organic compound is a ketone? (1) CH3OH; (2) CH3COCH3; (3) CH3COOH;
(4) CH3COOCH3.
___ 94.
Which of the following compounds has the lowest normal boiling point? (1) butane
;
(2) ethane; (3) methane; (4) propane.
___ 95. Which process increases the yield of gasoline and kerosene from crude oi
l? (1) oxidation;
(2) cracking; (3) Haber; (4) contact.
___ 96.
Organic compounds that are essentially nonpolar and exhibit weak intermolecular
forces have (1) low melting points; (2) low vapor pressure; (3) high conductivit
y
in solution; (4) high boiling points.
___ 97. What is the formula for pentanol? (1) C5; (2) C5OH; (3) C4; (4) C4H9OH.
H12H11H10
___ 98.
Which compound is a member of the alkene series of hydrocarbons? (1) benzene;
(2) propene; (3) toluene; (4) butadiene.
___ 99. Which compound contains a triple bond? (1) CH4; (2) C2; (3) C3; (4) C4
H2H6H10.
___ 100.
Which organic reaction involves the bonding of monomers by a dehydration process
?
(1) substitution; (2) oxidation; (3) addition polymerization; (4) condensation
polymerization.
___ 101. In crude petroleum, fractions can be separated according to their diffe
ring boiling
points by (1) the contact process; (2) the Haber process; (3) fractional distill
ation;
(4) cracking.
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