Thermal Properties of Matter Test

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Thermal Properties of Matter Test - 15

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Weekly Quiz Competition

Question 1
1 / -0

Absolute zero is

A
$$\displaystyle { -273 }^{ o }C$$

B
$$\displaystyle { -273 }^{ o }F$$

C
$$\displaystyle { -273 }^{ o }K$$

D
None of these

Solution

Absolute zero is the point where no more heat can be removed from a system, according to the absolute or thermodynamic temperature scale. This corresponds to 0 K or -273C.
Hence, option A is correct.
Question 2
1 / -0

The nature of the graph of pressure 'P' against reciprocal of volume 'V' of an ideal gas at constant temperature is

A
a straight line not passing through origin

B
a parabola

C
a straight line passing through origin

D
a rectangular hyperbola

Solution

Boyle's Law states that the absolute pressure and volume of a given mass of confined gas are inversely proportional, provided the temperature remains unchanged within a closed system.
By plotting pressure (p) against the reciprocal of the volume (1/V) a straight line is obtained the gradient of which is the constant in Boyle’s Law.
Question 3
1 / -0

Iron, hydrogen peroxide and carbon dioxide. When same amount heat is supplied to these three substances, which expands most?

A
Hydrogen peroxide

B
Carbon dioxide

C
Iron

D
All of these

Solution

Carbon dioxide being a gas expands the most.
Question 4
1 / -0

The first thermometer was developed by :

A
Joule

B
Fahrenheit

C
Galileo

D
Watt

Solution

$$Answer:-$$ C
Galileo Galilei is often claimed to be the inventor of the thermometer. However the instrument he invented could not strictly be called a thermometer: to be a thermometer an instrument must measure temperature differences; Galileo's instrument did not do this, but merely indicated temperature differences. His instrument should rightly be called a thermoscope.
The Thermoscope:-
The predecessor to the thermometer, the thermoscope is a thermometer without a scale; it indicates differences in temperature only ie it can show if the temperature is higher, lower or the same, but unlike a thermometer it cannot measure the difference nor can the result be recorded for future reference. The thermoscope was widely used by a group of scientists in Venice that included Galileo. It was only a small step from the thermoscope to the thermometer.
Question 5
1 / -0

In Solar cooker:

A
Electricity is used to cook food

B
Chemical energy is converted to electrical energy

C
Radiation from the sun is used to cook food

D
Heat energy is converted light energy

Solution

Solar cooker has reflectors which reflect the sun's radiation into the food kept inside. This reflected radiation provides enough heat for cooking.
Question 6
1 / -0

A beaker is completely filled with water at $$4^{\circ}C$$. It will overflow if

A
heated above $$4^{\circ}C$$.

B
cooled below $$4^{\circ}C$$.

C
both heated and cooled above and below $$4^{\circ}C$$ respectively.

D
none of the above.

Solution

Volume of water is minimum at $$4^{\circ}C$$. It will overflow if both heated and cooled above & below $$4^0C$$ respectively.
Question 7
1 / -0

The heat energy emitted by sun reaches the earth through:

A
Conduction

B
Convection

C
Radiation

D
None

Solution

Since there is no medium in space. So, the heat from the sun propagate without a medium to reach the earth's surface which is a property of radiation.
Question 8
1 / -0

The most commonly used thermometric liquid is :

A
water

B
alcohol

C
mercury

D
None of these

Solution

$$Answer:-$$ C
Most metals are good conductors of heat and they are solids at room temperature. Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer.
Question 9
1 / -0

Which of the following will rise the highest?

A
Air at $$10^{\circ}C$$

B
Air at $$40^{\circ}C$$

C
Air at $$20^{\circ}C$$

D
Air at $$-5^{\circ}C$$

Solution

$$Answer:-$$ B
Hot air rises because when you heat air (or any other gas for that matter), it expands. When the air expands, it becomes less dense than the air around it. So, more warmer air will rise highest.
Question 10
1 / -0

The phenomenon involved in sea breeze and land breeze is

A
Convection

B
Conduction

C
Radiation

D
None

Solution

$$Sea \ breeze:$$ They are formed during the day time when land and sea both are heated equally by the sun, but land is heated up more quickly, thus air above land due to heat becomes lighter and rises up due to $$convection.$$ Thus pressure decreases and cold and humid air above the sea blowing towards land.
$$Land \ breeze:$$ They are formed during the night when sea water and land both lose heat. Land loses heat energy fast and cools more rapidly as compared to the sea. Sea water being at higher temperature, the air becomes lighter and rises up due to $$convection$$. So air from land starts blowing towards the sea and gives rise to a land breeze.
In both the processes, the transfer of heat takes place by actual movement of the particles of the medium.

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Thermal Properties of Matter Test - 15

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Thermal Properties of Matter Test - 15

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SHARING IS CARING

Question 1

$$\displaystyle { -273 }^{ o }C$$

$$\displaystyle { -273 }^{ o }F$$

$$\displaystyle { -273 }^{ o }K$$

None of these

Solution

Question 2

a straight line not passing through origin

a parabola

a straight line passing through origin

a rectangular hyperbola

Solution

Question 3

Hydrogen peroxide

Carbon dioxide

Iron

All of these

Solution

Question 4

Joule

Fahrenheit

Galileo

Watt

Solution

Question 5

Electricity is used to cook food

Chemical energy is converted to electrical energy

Radiation from the sun is used to cook food

Heat energy is converted light energy

Solution

Question 6

heated above $$4^{\circ}C$$.

cooled below $$4^{\circ}C$$.

both heated and cooled above and below $$4^{\circ}C$$ respectively.

none of the above.

Solution

Question 7

Conduction

Convection

Radiation

None

Solution

Question 8

water

alcohol

mercury

None of these

Solution

Question 9

Air at $$10^{\circ}C$$

Air at $$40^{\circ}C$$

Air at $$20^{\circ}C$$

Air at $$-5^{\circ}C$$

Solution

Question 10

Convection

Conduction

Radiation

None

Solution

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