Physical and Chemical Changes Test

Result

Physical and Chemical Changes Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Physical change is a process of-

A
Reverse process

B
One directional

C
Multi directional

D
All of the above

Solution

According to this question the correct option will be ‘A’ because Evaporation is a reversible physical reaction. The reverse process is water condensing from the atmosphere onto a surface. Evaporation involves the change in state from liquid to gas. It's not the same as vaporization, or boiling, because it occurs at temperatures below the boiling point of the substance.
Question 2
1 / -0

Heating of any substance results in a-

A
physical change

B
physical change and chemical change

C
chemical change

D
none of these.

Solution

According to this question the correct option will be ‘B’ because A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding. Often, physical changes can be undone, if energy is input.
Question 3
1 / -0

which kind of changes occurs in the Filling up a balloon with hot air?

A
Physical

B
Chemical

C
Physical and Chemical

D
Both B and C

Solution

According to this question the correct option will be ‘A’ as Yes, It is a physical change because it's only losing air. When you put air in the balloon it's still a balloon, and when it loses air it's still a balloon. So it's a physical change since it didn't change in substance.
Question 4
1 / -0

Appearance or shape of an substance changes it is called a -

A
Physical change

B
Chemical change

C
Physical change and chemical both

D
only option C

Solution

According to this question the correct option will be ‘A’ Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula.
Question 5
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All of these are chemical changes except-

A
Melting of wax

B
Rusting of iron rod

C
Both A and B.

D
None of these

Solution

According to this question the correct option will be ‘A’ because Melting of wax is physical change. In melting of wax, only the state of wax changes from solid to liquid. It is a reversible reaction and no new substance is formed. Burning of candle is both physical and chemical change. When the candle burns, the wax slowly melts which freezes after some time (Physical change).
Question 6
1 / -0

Where solid changes in to liquid state-

A
Melting of wax

B
Melting of ice

C
Both A and B

D
Only option B

Solution

According to this question the correct option will be ‘C’ because melting of ice and wax both are processes in which solid changes in to liquid state.
Question 7
1 / -0

Photosynthesis is a process, which kind of changes occur in this?

A
Chemical

B
radioactive

C
Physical

D
None of the above

Solution

According to this question the correct option will be ‘A’ because Photosynthesis is a chemical change process. It can be summarized in a single chemical equation, but that equation is actually the sum total of a collection of chemical reactions.
Question 8
1 / -0

Ripening of fruits is a kind of changes-

A
Chemical

B
Physical

C
Both A and B

D
None of these

Solution

According to this question the correct option will be ‘A’ because after ripening a new product with different properties is formed hence it is chemical change.
Question 9
1 / -0

Which of the following physical change occurs by the action of heat?

A
tearing of paper

B
Bending of wires

C
Melting of ice

D
None of these

Solution

According to this question the correct option will be ‘C’ because melting of ice is a physical change which convert in to the water.
Question 10
1 / -0

All of these are physical changes except-

A
melting of wax

B
Combustion of magnesium ribbon

C
Cutting of fruits

D
None of these

Solution

According to this question the correct option will be ‘B’ because Combustion of magnesium ribbon involves many chemical changes.

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Re-Attempt Weekly Quiz Competition

Physical and Chemical Changes Test - 2

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Physical and Chemical Changes Test - 2

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SHARING IS CARING

Question 1

Reverse process

One directional

Multi directional

All of the above

Solution

Question 2

physical change

physical change and chemical change

chemical change

none of these.

Solution

Question 3

Physical

Chemical

Physical and Chemical

Both B and C

Solution

Question 4

Physical change

Chemical change

Physical change and chemical both

only option C

Solution

Question 5

Melting of wax

Rusting of iron rod

Both A and B.

None of these

Solution

Question 6

Melting of wax

Melting of ice

Both A and B

Only option B

Solution

Question 7

Chemical

radioactive

Physical

None of the above

Solution

Question 8

Chemical

Physical

Both A and B

None of these

Solution

Question 9

tearing of paper

Bending of wires

Melting of ice

None of these

Solution

Question 10

melting of wax

Combustion of magnesium ribbon

Cutting of fruits

None of these

Solution

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