Heat Test

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Heat Test - 34

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Weekly Quiz Competition

Question 1
1 / -0

The velocity of heat radiation in vacuum is

A
Equal to that of light

B
Less than that of light

C
Greater than that of light

D
Equal to that of sound

Solution

The velocity of heat radiation in the vacuum is $equal$ to that of light.
Question 2
1 / -0

Snow is more heat-insulating than ice, because

A
Air is filled in porous of snow

B
Ice is more bad conductor than snow

C
Air is filled in porous of ice

D
Density of ice is more
Question 3
1 / -0

The layers of the atmosphere are heated through

A
Convection

B
Conduction

C
Radiation

D
(b) and (c) both

Solution

The layers if the atmosphere are heated through Radiation from sun and convection currents, are responsible for heating.
Question 4
1 / -0

Woollen clothes are used in winter season because woollen clothes

A
Are good sources for producing heat

B
Absorb heat from surroundings

C
Are bad conductors of heat

D
Provide heat to body continuously

Solution

In winter, the temperature of the surrounding is low compared to the body temperature $37.4 ^\circ C$ . Since woollen clothes are bad conductors of heat, so they keep the body warm .
Question 5
1 / -0

A thermos flask is polished well

A
To make attractive

B
For shining

C
To absorb all radiations from outside

D
To reflect all radiations from outside

Solution

The polished surface reflects all the radiation. And a thermos flask is used to keep the heat out so the well-polished surface reflects all radiation from outside.
Question 6
1 / -0

Answer the question:
The thermometer in the diagram has no scale.
Where must the bulb be placed so that $0^\circ C$ can be marked on the stem ?

A
in a freezer

B
in pure boiling water

C
in pure cold water

D
in pure melting ice

Solution

To mark $0^o\,C$ on thermometer, we need to put it in where temperature is $0^o \,C$
As we know that Temperature in pure melting ice is $0^o \,C$ ,
so we should put thermometer in pure melting ice to mark on scale.
Hence option D is correct
Question 7
1 / -0

India has adopted _______ scale.

A
Fahrenheit scale

B
Celsius scale

C
Kelvin Scale

D
None of these

Solution

India has adopted the celsius scale, thus option $B$ is correct.
Question 8
1 / -0

Which of these we could identify as cold with our sense of touch?

A
Cup of hot coffee

B
Hot tea

C
Ice

D
A glass of water

Solution

Among the above options, Ice is colder because it exists at zero or below zero degrees Celcius.
Question 9
1 / -0

How is temperature measured?

A
By sense of touch

B
By looking at objects

C
Through a thermometer

D
None of these

Solution

Temperature is measured by a device called thermometer, thus option $C$ is correct.
Question 10
1 / -0

A reliable measure of the hotness of an object is ____________

A
Temperature

B
Thermometer

C
Sense of touch

D
None of these

Solution

A reliable measure of the
hotness of an object is its
temperature thus option $A$ is correct.

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Re-Attempt Weekly Quiz Competition

Heat Test - 34

Result

Heat Test - 34

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Rank

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SHARING IS CARING

Question 1

Equal to that of light

Less than that of light

Greater than that of light

Equal to that of sound

Solution

Question 2

Air is filled in porous of snow

Ice is more bad conductor than snow

Air is filled in porous of ice

Density of ice is more

Question 3

Convection

Conduction

Radiation

(b) and (c) both

Solution

Question 4

Are good sources for producing heat

Absorb heat from surroundings

Are bad conductors of heat

Provide heat to body continuously

Solution

Question 5

To make attractive

For shining

To absorb all radiations from outside

To reflect all radiations from outside

Solution

Question 6

in a freezer

in pure boiling water

in pure cold water

in pure melting ice

Solution

Question 7

Fahrenheit scale

Celsius scale

Kelvin Scale

None of these

Solution

Question 8

Cup of hot coffee

Hot tea

Ice

A glass of water

Solution

Question 9

By sense of touch

By looking at objects

Through a thermometer

None of these

Solution

Question 10

Temperature

Thermometer

Sense of touch

None of these

Solution

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