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Action of Heat on Substances MCQ. We covered all the Action of Heat on Substances MCQ in this post for free so that you can practice well for the exam.
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Action of Heat on Substances Practice Bits for Students
What is the color of zinc oxide after it is heated?
a. Brown
b. Yellow
c. White
d. Bluish green
Option b – Yellow
What is the typical color of copper carbonate?
a. Reddish brown
b. Black
c. Dull greenish
d. None
Option c – Dull greenish
When ice turns into water, it is an example of:
a. Chemical change
b. Physical change
c. Both (a) and (b)
d. None of the above
Option b – Physical change
What color does lead oxide turn when heated?
a. Yellow
b. White
c. Brown
d. Green
Option c – Brown
Lighting a matchstick is categorized as:
a. Physical
b. Chemical
c. Both (a) and (b)
d. None
Option b – Chemical
Which type of change is generally irreversible?
a. Chemical change
b. Physical change
c. Both (a) and (b)
d. None
Option a – Chemical change
Which kind of change is usually reversible?
a. Physical change
b. Chemical change
c. Both (a) and (b)
d. None
Option b – Chemical change
Which of the following indicates a physical change?
a. New substances are created
b. Energy is not released
c. Energy is absorbed
d. Temporary change
Option d – Temporary change
What is the color of copper oxide?
a. Dull greenish
b. Reddish brown
c. Black
d. Grey
Option c – Black
What is the color of lead oxide after it cools down?
a. Yellow
b. Greenish
c. Brown
d. Pink
Option a – Yellow
The appearance of zinc oxide after cooling is:
a. Reddish brown
b. Brown
c. Yellow
d. Dull greenish
Option a – Reddish brown
What is the typical color of nitrogen dioxide?
a. Reddish brown
b. Dull greenish
c. Bluish green
d. Pale yellow
Option a – Reddish brown
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