1. What is the physical state of chloromethane at room temperature?
A.
Solid
B.
Liquid
C.
Gas
D.
Plasma
Correct Answer:
Gas
Explanation:
Chloromethane is a lower haloalkane and exists as a gas at room temperature.
2. What is the physical state of bromoethane at room temperature?
A.
Gas
B.
Liquid
C.
Solid
D.
Plasma
Correct Answer:
Liquid
Explanation:
Bromoethane exists as a liquid at room temperature.
3. As the carbon chain length of haloalkanes increases, their physical state generally changes from gases to:
A.
Liquids and then solids
B.
Solids and then gases
C.
Only gases
D.
Only solids
Correct Answer:
Liquids and then solids
Explanation:
Higher haloalkanes generally have higher boiling points, so their physical state changes from gases to liquids and eventually solids.
4. What is the physical state of 1-chloropropane at room temperature?
A.
Gas
B.
Liquid
C.
Solid
D.
Plasma
Correct Answer:
Liquid
Explanation:
1-Chloropropane is a haloalkane that exists as a liquid at room temperature.
5. Which of the following haloalkanes is gaseous at room temperature?
A.
Chloromethane
B.
1-Chloropropane
C.
1-Bromopropane
D.
1-Iodobutane
Correct Answer:
Chloromethane
Explanation:
Chloromethane is a lower haloalkane and is gaseous at room temperature, whereas the other listed compounds are liquids.
6. What is the physical state of chlorobenzene at room temperature?
A.
Gas
B.
Liquid
C.
Solid
D.
Plasma
Correct Answer:
Liquid
Explanation:
Chlorobenzene is a haloarene and exists as a liquid at room temperature.
7. Which haloarene is commonly found as a solid at room temperature?
A.
Chlorobenzene
B.
Bromobenzene
C.
Iodobenzene
D.
p-Dichlorobenzene
Correct Answer:
p-Dichlorobenzene
Explanation:
p-Dichlorobenzene is a solid at room temperature, while chlorobenzene, bromobenzene, and iodobenzene are liquids.
8. What is the physical state of iodobenzene at room temperature?
A.
Gas
B.
Liquid
C.
Solid
D.
Plasma
Correct Answer:
Liquid
Explanation:
Iodobenzene is a haloarene that exists as a liquid at room temperature.
9. Which physical state is generally associated with higher haloalkanes?
A.
Gas only
B.
Liquid or solid
C.
Plasma only
D.
Gas and plasma only
Correct Answer:
Liquid or solid
Explanation:
Higher haloalkanes generally occur as liquids or solids because their boiling points increase with increasing molecular size.
10. What is the physical state of bromobenzene at room temperature?
A.
Solid
B.
Gas
C.
Liquid
D.
Plasma
Correct Answer:
Liquid
Explanation:
Bromobenzene is a haloarene that is liquid at room temperature.
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