Thermal Properties of Matter Test

Result

Thermal Properties of Matter Test - 19

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

_________ is a process of transfer of heat by the actual movement of the medium particles.

A
Conduction

B
Convection

C
Radiation

D
All

Solution

Convection is a process of transfer of heat by the actual movement of the medium particles. A medium is required for the transfer of heat by convection.
Question 2
1 / -0

If we take some water at $$\displaystyle { 0 }^{ \circ }$$C and start heating it,we find that in the temperature range $$\displaystyle { 0 }^{ \circ }$$C to $$\displaystyle { 4 }^{ \circ }$$C

A
It expands on heating

B
It contracts on heating

C
Both

D
None

Solution

If we take some water at $$\displaystyle { 0 }^{ \circ }$$C and start heating it,we find that in the temperature range $$\displaystyle { 0 }^{ \circ }$$C to $$\displaystyle { 4 }^{ \circ }$$C,it contracts instead of expanding.on heating it further above $$\displaystyle { 4 }^{ \circ }$$C,it expands.
Question 3
1 / -0

The molecules of medium vibrate about their mean positions during heat transfer in the process of

A
Conduction

B
Radiation

C
Convection

D
None

Solution

The molecules of medium transfer heat as they vibrate about mean position in conduction.
The molecules of medium absorb heat, they rise and other molecules of medium come to take their place convection
In radiation, medium does not play role.
Question 4
1 / -0

In vacuum, heat ______ be transferred by convection.

A
Can

B
Cannot

C
Both

D
None

Solution

In liquids and gases, the heat is transferred by convection. No medium is required for the transfer of heat by radiation. In a vacuum, heat cannot be transferred by convection.
Question 5
1 / -0

If object A has higher temperature than object B , then transfer of heat will be from

A
$$A$$ to $$B$$

B
$$B$$ to $$A$$

C
No heat will transfer.

D
Can not say.

Solution

Heat always flow from higher temperature to lower temperature . Since $$A$$ has more temperature than $$B$$ so heat will transfer from $$A$$ to $$B$$.
Question 6
1 / -0

Water is poured into a pan and heated over a flame. After some time, the hot water begins rising to the top. Which type of heat transfer is involved in this ?

A
conduction

B
convection

C
radiation

D
thermal expansion

E
specific heat

Solution

Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Convection above a hot surface occurs because hot air expands, becomes less dense, and rises.
Question 7
1 / -0

The pictured graphs are intended to show the relationship between the volume of a gas and the pressure of the gas. Which graph most likely shows that the volume of the gas is inversely proportional to its pressure?

A

B

C

D

E

Solution

Volume of the gas is inversely proportional to its pressure i.e $$V \propto \dfrac{1}{P}$$
$$\implies$$ $$VP = constant$$
Hence V-P graph is a hyperbola as shown in option A.
Question 8
1 / -0

Which of the following is an example of convection?

A
The heat of the sun warming our planet

B
The heat from an electric stove warming a frying pan

C
Ice cubes cooling a drink

D
A microwave oven cooking a meal

E
An overhead fan cooling a room

Solution

Convection is a form of heat transfer where a large number of molecules move from one place to another. An overhead fan works precisely by this method: it sends cooler air molecules down into a hot room, cooling the temperature of the room. The heat of the sun and the cooking action of a microwave are both forms of radiation, while the heat on a frying pan and the cooling action of ice cubes are both forms of conduction.
Question 9
1 / -0

Which of the following property is used to identify whether a substance is a solid, liquid or gas ?

A
Conductivity

B
Number of protons

C
Temperature

D
Number of neutrons

E
Resistively

Solution

The temperature of a substance determines the state of the substance.
When temperature is below the freezing point of the substance, it is solid.
When temperature is above the boiling point of the substance, it is a gas.
When the temperature of substance falls in between this range, it is a liquid.
Question 10
1 / -0

As the air around the base of a candle flame is heated, it rises and is replaced by cooler air due to which of following type of heat transfer?

A
Conduction

B
Convection

C
Radiation

D
Diffraction

E
Latent heat

Solution

Whenever the temperature of any region of a liquid or gas becomes greater than other region ,density of hotter region becomes low for that the particles from high density region (colder region) come there ,that is convection. in the given incident it is happening so it is convection.
In conduction particles don't leave their positions so it not conduction .
In radiation heat is transferred from one point to other without heating the medium so it is also not radiation.
Latent heat is related to state change but there is no state change.
Diffraction is the property of waves , having no relation in this particle system.