MCQ (1 Marks)

MCQ 511 Mark

Mercury is generally used in thermometer because it has a:

A
High fluidity
B
High density
✓
High conductivity
D
High specific heat

Answer

Correct option: C.

High conductivity

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MCQ 521 Mark

Which thermometer is used to measure temperature of different things and places?

✓
Laboratory thermometer
B
Clinical thermometer
C
Minimum and maximum thermometer
D
None of these

Answer

Correct option: A.

Laboratory thermometer

A laboratory thermometer, which is colloquially known as the lab thermometer, is used for measuring temperatures other than the human body temperature.
It ranges from $-10^\circ C$ to $110^\circ C.$ Laboratory thermometers are designed for lab purposes such as checking boiling point, freezing point, or temperature of other substances.

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MCQ 531 Mark

A Thermos flask prevents loss or gain of heat by:

A
Conduction only.
B
Convection only.
C
Radiation only.
✓
All the above.

Answer

Correct option: D.

All the above.

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MCQ 541 Mark

Which of the following are good conductors of heat?

✓
Metals
B
Glass
C
Water
D
Wood

Answer

Correct option: A.

Metals

Metals are generally good conductors of heat. Non $-$ metals are poor conductors of heat.

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MCQ 551 Mark

The process by which transfer of heat takes place by the actual movement of particles from one part of the body to another part is called.

A
Conduction.
✓
Convection.
C
Radiation.
D
Vaporization

Answer

Correct option: B.

Convection.

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MCQ 561 Mark

Normal body temperature is:

A
$39^\circ C$
B
$17^\circ C$
C
$27^\circ C$
✓
$37^\circ C$

Answer

Correct option: D.

$37^\circ C$

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MCQ 571 Mark

Conviction May Occur Through:

A
Solids, liquids.
✓
Liquids, gases.
C
Solids, gases.
D
Solids, liquids, gases.

Answer

Correct option: B.

Liquids, gases.

Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Heat energy is transferred from hot places to cooler places by convection. Hence,

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MCQ 581 Mark

Figure $(a-d)$ shows a student reading a doctor’s thermometer. Which of the figure indicates the correct method of reading temperature?

Answer

Correct option: A.

In first case, eyes of student are in level of mercury in thermometer, so it is the correct way to read the temperature in a clinical thermometer.

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MCQ 591 Mark

A Marble Tile Would Feel Cold As Compared To A Wooden Tile On A Winter Morning Because The Marble Tile:

✓
is a better conductor of heat than the wooden tile.
B
tile is polished while wooden tile is not polished.
C
reflects more heat than wooden tile.
D
is a poor conductor of heat than the wooden tile.

Answer

Correct option: A.

is a better conductor of heat than the wooden tile.

Since, a marble tile is a good conductor of heat as compared to the wood, therefore a marble tile will allow heat to pass through itself easily, keeping it a cool on a winter morning.

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MCQ 601 Mark

Which serves the purpose of an insulator?

✓
Still air
B
Moving air
C
Both
D
None

Answer

Correct option: A.

Still air

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MCQ 611 Mark

An wooden spoon is dipped in a cup of ice$-$cream, its other end.

A
Becomes clod by the process of convention.
B
Becomes hot by the process of conduction.
✓
Does not become cold.
D
None of these.

Answer

Correct option: C.

Does not become cold.

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MCQ 621 Mark

Method of heat transfer in steel rod is:

✓
Conduction
B
Convection
C
Radiation
D
All of these

Answer

Correct option: A.

Conduction

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MCQ 631 Mark

In which process heat is transferred from hotter end to colder end is known as:

✓
Conduction
B
Convection
C
Radiation
D
None of these

Answer

Correct option: A.

Conduction

Heat is transferred from hotter end to colder end is known as conduction.

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MCQ 641 Mark

Heat always flows:

A
From a colder object to a hotter object.
✓
From a hotter object to a colder object.
C
In both the directions.
D
None of the above.

Answer

Correct option: B.

From a hotter object to a colder object.

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MCQ 651 Mark

In Which Of The Statement Is Or Are Correct About “Thermometer”?

✓
Don’t hold the thermometer by the bulb.
B
Don’t washed thermometer by any liquid.
C
Don’t jerks the thermometer before use.
D
Don’t use clinical thermometer for the person who works in sunlight.

Answer

Correct option: A.

Don’t hold the thermometer by the bulb.

We are advised not to hold the thermometer bulb while reading it, as the level of mercury increases from the actual reading due to our body temperature.

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MCQ 661 Mark

The normal temperature of Human body is:

A
$40^\circ C.$
✓
$37^\circ C.$
C
$42^\circ C.$
D
$35^\circ C.$

Answer

Correct option: B.

$37^\circ C.$

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MCQ 671 Mark

Boojho Has Three Thermometers. He Wants To Measure The Temperature Of His Body And That Of Boiling Water. Which Thermometer$(S)$ Should He Choose?

✓
Clinical thermometer for measuring body tem. and laboratory thermometer for measuring the tem. of boiling water.
B
Clinical thermometer for measuring temperature of both.
C
Laboratory thermometer for measuring temperature of both.
D
Digital thermometer for measuring temperature of both.a.

Answer

Correct option: A.

Clinical thermometer for measuring body tem. and laboratory thermometer for measuring the tem. of boiling water.

Clinical thermometer and digital thermometer are used to measure body temperature and laboratory thermometer is used to measure the temperature of boiling water or any object other than human body.

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MCQ 681 Mark

The correct method of reading a clinical thermometer is:

A
Holding the thermometer by bulb
B
Before use the mercury level should be below $39^\circ C$
✓
Don’t hold the thermometer by bulb
D
None of these

Answer

Correct option: C.

Don’t hold the thermometer by bulb

It advised not to hold the thermometer by its bulb while reading it because the actual reading of human body temperature will get affected. This is for the reason that level of Mercury raises due to human body temperature.

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MCQ 691 Mark

Which of the following is a good conductor of heat?

A
Iron
B
Steel
C
Aluminium
✓
All of these

Answer

Correct option: D.

All of these

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MCQ 701 Mark

An Iron Ball At $40$ Degree Celsius Is Dropped In A Mug Containing Water At $40$ Degree Celsius. The Heat Will:

A
Flow from iron ball to water.
✓
Not flow from iron ball to water or from water to iron ball.
C
Flow from water to iron ball.
D
Increase the temperature of botha.

Answer

Correct option: B.

Not flow from iron ball to water or from water to iron ball.

Energy does transfer between the two bodies continuously even if they are at the same temperature but there is no net energy transfer between the bodies. Therefore, we can say that no energy flow from iron ball to water or from water to iron ball. Hence,

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MCQ 711 Mark

The hand which is over the flame feels hotter because hot air moves in:

A
Downward direction
✓
Upward direction
C
Circular direction
D
None of these

Answer

Correct option: B.

Upward direction

The hand feels hotter because air moves upward direction.

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MCQ 721 Mark

Which thermometer is used to measure our body temperature?

A
Laboratory thermometer
B
Clinical thermometer
C
Digital thermometer
✓
Both $(b)$ and $(c)$

Answer

Correct option: D.

Both $(b)$ and $(c)$

Clinical and digital thermometer measure the body temperature.

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MCQ 731 Mark

Boojho has three thermometers as shown in Figure. He wants to measure the temperature of his body and that of boiling water. Which thermometer $(s)$ should he choose$?$

✓
Thermometer $(i)$ or $(iii)$ for measuring body temperature and $(ii)$ for measuring the temperature of boiling water.
B
Thermometer $(i)$ for measuring temperature of both.
C
Thermometer $(ii)$ for measuring temperature of both.
D
Thermometer $(iii)$ for measuring temperature of both.

Answer

Correct option: A.

Thermometer $(i)$ or $(iii)$ for measuring body temperature and $(ii)$ for measuring the temperature of boiling water.

Thermometers $(i)$ and $(iii) $ are clinical thermometers used to measure body temperature and $(ii)$ is laboratory thermometer used to measure the temperature of boiling water or any object other than human body.

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MCQ 741 Mark

Which type of cloth is preferred in summer?

A
Silk clothes
✓
Cotton clothes
C
Nylon clothes
D
Polyester clothes

Answer

Correct option: B.

Cotton clothes

Cotton is one the best fabrics for hot weather. Not only is it cheap and hugely available, but it is also great for the heat. Cotton is soft, lightweight, breathable, and soaks up sweat, allowing heat to escape the body and for you to stay cool.

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MCQ 751 Mark

Stainless Steel Pans Are Usually Provided With Copper Bottoms. The Reason For This Could Be that:

A
Copper bottom makes the pan more durable.
B
Such pans appear colorful.
✓
Copper is a better conductor of heat than the stainless steel.
D
Copper is easier to clean than the stainless steel.

Answer

Correct option: C.

Copper is a better conductor of heat than the stainless steel.

After gold and silver, copper is a better conductor of heat than the stainless steel. And tungsten is worst conductor of heat which is used in electric bulb filament for its property of resistance. Hence,

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MCQ 761 Mark

A good insulator of heat is:

A
Copper
B
Mercury
✓
Trapped air
D
Iron

Answer

Correct option: C.

Trapped air

A thermal conductor is a material that allows energy in the form of heat, to be transferred within the material, without any movement of the material itself. $Eg.$ Metals.
An insulator is a material that does not allow a transfer of electricity or heat. Materials that are poor thermal conductors can also be described as being good thermal insulators. $Eg.$ trapped air

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MCQ 771 Mark

Sea breeze blows during:

✓
Day
B
Night
C
Evening
D
None of these

Answer

Correct option: A.

Day

Sea breeze blows during day.

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MCQ 781 Mark

The flow of heat by conduction is generally observed in case of:

✓
Solids
B
Liquids
C
Gases
D
All of these

Answer

Correct option: A.

Solids

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MCQ 791 Mark

On a Fahrenheit scale:

A
Boiling point of water is $212^\circ F$
B
The temperature will be equal to that on the Celsius scale at $−40^\circ C$
C
The difference between the upper fixed point and the lower fixed point is divided into $180$ equal parts
✓
All of the above

Answer

Correct option: D.

All of the above

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MCQ 801 Mark

Heat is a form:

A
Power
B
Work
C
Temperature
✓
Energy

Answer

Correct option: D.

Energy

Heat as a form of energy because all of the many forms of energy, including heat, can be converted into work, amounts of energy are expressed in units of work, such as joules, foot$-$pounds, kilowatt$-$hours, or calories.

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MCQ 811 Mark

To measure the temperature of an object, we use:

A
Barometer
B
Lactometer
✓
Thermometer
D
None of these

Answer

Correct option: C.

Thermometer

Thermometer is used to measure the temperature of an object.

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MCQ 821 Mark

Land breeze blows from:

A
Lower surface to upper surface
B
Sea to land
C
Upper surface to lower surface
✓
Land to sea

Answer

Correct option: D.

Land to sea

A land breeze is a type of wind that blows from the land to the ocean. When there is a temperature difference between the land surface and the ocean, winds will move offshore.
As the temperature of the land surfaces cool, the warm air rises and creates a small area of high pressure near the land surface.

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MCQ 831 Mark

The scale used with the laboratory thermometer is Celsius scale, indicated by:

A
$^\circ F$
B
$^\circ C$
✓
$K$
D
None of these

Answer

Correct option: C.

$K$

Celcius scale is indicated by $^\circ C.$

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MCQ 841 Mark

In solid heat is transferred by the process of:

✓
Conduction.
B
convection.
C
Radiation.
D
None of these.

Answer

Correct option: A.

Conduction.

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MCQ 851 Mark

Which type of cloth is preferred in summer?

A
Silk clothes
✓
Cotton clothes
C
Nylon clothes
D
Polyester clothes

Answer

Correct option: B.

Cotton clothes

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MCQ 861 Mark

Paheli Wants To Know That Is It Possible To Construct Building Which Are Not Affected By Heat?

A
Building made by soil.
B
Wooden bricks are used in the building.
✓
Hollow bricks are used for making building.
D
White colored cement bricks are used in building.

Answer

Correct option: C.

Hollow bricks are used for making building.

This can be done by constructing outer walls by special bricks. So, that they have trapped layers of air. The way of doing this is to use hollow bricks, which are available these days. Hence

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MCQ 871 Mark

During the night:

A
Sea water heats up
B
Land heats up
✓
Land cools more quickly than the sea
D
Sea cools quickly than the land

Answer

Correct option: C.

Land cools more quickly than the sea

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MCQ 881 Mark

In Which Of The Statement Is Or Incorrect?

✓
A clinical thermometer consists a non-uniform glass tube.
B
Thermometric liquids can be seen in clinical thermometer.
C
The temperature of every person may not be $37$ degree Celsius.
D
All the above.

Answer

Correct option: A.

A clinical thermometer consists a non-uniform glass tube.

A clinical thermometer consists a uniform glass tube. Rest all the options are correct. Hence.

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MCQ 891 Mark

Which of the following statement is true?

A
Metals are bad conductors of heat
B
In gases, heat is transferred by conduction
C
In conduction, molecules move from hotter to colder parts transmitting energy
✓
Metals conduct heat better than the gases.

Answer

Correct option: D.

Metals conduct heat better than the gases.

Metals conduct heat better than gases.
Order of conduction of heat
Solid $>$ Liquid $>$ Gas

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MCQ 901 Mark

A device used to measure the temperature is:

A
Ttransistor
✓
Thermometer
C
Mercury
D
None of these

Answer

Correct option: B.

Thermometer

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MCQ 911 Mark

The process by which heat comes from sun to the earth is:

A
Conduction.
B
Convection.
✓
Radiation.
D
Vaporization.

Answer

Correct option: C.

Radiation.

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MCQ 921 Mark

Paheli wants to measure the body temperature of Boojho. She got $36.4$ degree Celsius, $37.4$ degree Celsius and $36.6$ degree Celsius in first, second and third times respectively. What is the average body temperature of Boojho$?$

A
$37.8$ degree Celsius
B
$36.4$ degree Celsius
C
$37.4$ degree Celsius
✓
$36.8$ degree Celsius

Answer

Correct option: D.

$36.8$ degree Celsius

$ (36.4 + 37.4 + 36.6) $ degree Celsius $= 110.4$
For getting average body tem we should divide: “Total temperature” by “Number of times” Therefore, $110.$
$\frac{4}{3}=36.8$ degree Celsius

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MCQ 931 Mark

In Fahrenheit scale, water freezes at:

A
$0^\circ F$
✓
$32^\circ F$
C
$40^\circ F$
D
$212^\circ F$

Answer

Correct option: B.

$32^\circ F$

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MCQ 941 Mark

In Which Of The Statement Is Or Are Correct?

A
Doctor’s thermometer is a device which measures our body temperature.
B
The maximum$-$minimum is a device which measures the temperature of any objects.
C
Laboratory thermometer is used to measure the temperature of laboratory objects.
✓
None of the above

Answer

Correct option: D.

None of the above

Clinical thermometers or doctor’s thermometer is a device which measures our body temperature. Rest all are incorrect. Hence,

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MCQ 951 Mark

Which of the following devices is used for measurement of temperature of human body?

A
Stethoscope
✓
Clinical thermometer
C
Laboratory thermometer
D
None of these

Answer

Correct option: B.

Clinical thermometer

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MCQ 961 Mark

To measure high temperatures $ >2500^\circ C,$ we use:

A
Constant volume gas thermometer
B
Thermocouple
C
Resistance thermometer
✓
Pyrometer

Answer

Correct option: D.

Pyrometer

Pyrometer can measure temperature ranging from $50^\circ C$ to $4000^\circ C$
All other measuring devices are used for temperatures below $2500^\circ C$

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MCQ 971 Mark

Which scale was used in clinical thermometer during earlier times?

A
Celsius scale
✓
Fahrenheit scale
C
Both $(i)$ and $(ii)$
D
None of these

Answer

Correct option: B.

Fahrenheit scale

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MCQ 981 Mark

Paheli Wants To Measure The Body Temperature Of Boojho. She Got $36.4$ Degree Celsius, $37.4$ Degree Celsius And $36.6$ Degree Celsius In First, Second And Third Times Respectively. What Is The Average Body Temperature Of Boojho?

A
$37.8$ degree Celsius.
B
$36.4$ degree Celsius.
C
$37.4$ degree Celsius.
✓
$36.8$ degree Celsius.

Answer

Correct option: D.

$36.8$ degree Celsius.

$(36.4 + 37.4 + 36.6)$ degree Celsius $= 110.4$ For getting average body tem we should divide: “Total temperature” by “Number of times” Therefore, $110.4/3 = 36.8$ degree Celsius.

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MCQ 991 Mark

An iron ball at $40^\circ C$ is dropped in a mug containing water at $40^\circ C.$ The heat will: