Test Bank for Alkynes O-CHEM Exam Questions with Latest Update
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Course
Organic Chemistry
Institution
Organic Chemistry
Compounds that have the same molecular formula but different arrangements of atoms are called? - Answer-A) isomers.
Which of the following is true of nonane, CgH20, which has a
density of 0.79 g/mL,
melts at -51°C,
boils at 157°C?
A) Nonane is soluble in water.
B) Nonane is a gas at r...
Test Bank for Alkynes O-CHEM Exam
Questions with Latest Update
Compounds that have the same molecular formula but different arrangements of atoms
are called? - Answer-A) isomers.
Which of the following is true of nonane, CgH20, which has a
density of 0.79 g/mL,
melts at -51°C,
boils at 157°C?
A) Nonane is soluble in water.
B) Nonane is a gas at room temperature.
C) Nonane is a solid at room temperature.
D) Nonane does not undergo combustion.
E) Nonane floats on the surface of water. - Answer-Nonane floats on the surface of
water.
A formula that shows the arrangement of all bonds in a molecule is called a(n) -
Answer-C) condensed structural formula.
In the three-dimensional structure of methane, CH4, the hydrogen atoms attached to a
carbon atom are aligned - Answer-C) at the corners of a tetrahedron.
Which one of the following is NOT an organic substance?
A) an antibiotic
B) nylon
C) coal
D) silk
E) salt, sodium chloride - Answer-E) salt, sodium chloride
Hydrocarbon contains only the elements - Answer-C) carbon and hydrogen.
The functional group contained in the compound CH3CH2OH is a(n) . - Answer-C)
alcohol.
What type of compound is CH3CH2 CH2CI? - Answer-D) haloalkane
What is the name of this compound?
CI
CH3- CH-CH2- CH2 - Cl? - Answer-C) 1,3-dichlorobutane
The special feature that determines the family name and chemical reactivity of the
organic compound it is found in is called a(n) - Answer-A) functional group.
, 12) A molecule containing a carbon atom bonded to four chlorine atoms has the shape
of a?
A) triangle.
B) rhombus.
C) square. cube.
E) tetrahedron. - Answer-E) tetrahedron.
14) As carbon bonds with atoms of increasingly higher electronegativities, the polarity of
the bond
A) decreases.
B) increases.
C) stays the same.
D) reverses.
E) becomes inverted. - Answer-B) increases.
15) Carbon tetrachloride has a polar C-CI bond. What is the overall polarity of the
carbon tetrachloride molecule?
A) weakly polar
B) strongly polar
C) reversed polarity
D) nonpolar
E) inverse polarity - Answer-D) nonpolar
16) Which of the following is NOT typical of most organic compounds?
A) high melting point
B) poor solubility in water
C) low boiling point
D) covalent bonding
E) high flammability - Answer-A) high melting point
17) A functional group is a certain group of atoms that A) increases water solubility. B)
reacts in a predictable way whenever present. C) changes the color of the molecule
whenever present. D) always contains oxygen or nitrogen. E) never contains a halogen.
- Answer-B) reacts in a predictable way whenever present.
18) An alkene is always a carbon compound that contains what kind of bond.
A) single bond
B) double bond
C) triple bond
D) aromatic bond
E) hydrogen bond - Answer-B) double bond
An alkyne is always a carbon compound that contains a bond.
A) single
B) double
C) triple
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