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Combustion 7
Test Description: Chemistry combustion
Instructions: Answer all questions to get your test result.
1) Combustion is:
A
Energy producer.
B
All of the choices.
C
A chemical change.
D
An exothermic reaction.
2) The two types of combustion are:
A
Complete and incomplete.
B
None of the choices
C
Physical change and chemical change.
D
Exothermic and endothermic
3) The energy released from exothermic reactions may be:
A
Heat or thermal energy
B
All of the choices.
C
Electrical energy.
D
Light.
4) Carbon monoxide is:
A
Liquid
B
Natural Gas.
C
Healthy
D
The silent killer.
5) Incomplete combustion is:
A
Endothermic.
B
A reaction with enough oxygen.
C
Exothermic
D
A reaction with carbon dioxide.
6) Butane gas is a combustible material found in:
A
Solid.
B
None of the choices.
C
Liquified gas.
D
Liquid
7) Carbon dioxide and carbon monoxide are:
A
Two combusting agents.
B
None of the choices
C
Two combustible materials
D
Two air pollutants.
8) Carbon monoxide is:
A
Tasteless.
B
Colorless.
C
Odorless.
D
All of the choices.
9) The complete combustion of a hydrocarbon produces:
A
Carbon dioxide, water vapor and energy.
B
Carbon dioxide, oxygen and energy.
C
Oxygen, water vapor and energy.
D
Carbon monoxide, water vapor and energy.
10) Wood and charcoal are:
A
Two air pollutants.
B
None of the choices
C
Two combustible materials
D
Two combusting agents.
*select an answer for all questions
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