Heat Test

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Heat Test - 7

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Weekly Quiz Competition

Question 1
1 / -0

A red hot iron ball is suspended from the ceiling of a room by a thin metallic wire. By which of the following ways is the heat loss minimum?

A
Radiation

B
Convection

C
Conduction

D
The amount of heat lost by all the modes will be the same
Question 2
1 / -0

Conduction is a process by which

A
heat is transferred from the hotter end to the colder end of an object

B
heat is transferred from the colder end to the hotter end of an object

C
heat is not transferred between the two ends of an object

D
heat is radiated by all hot bodies
Question 3
1 / -0

How does a hot utensil kept away from the flame cool down?

A
It absorbs heat from the surroundings by radiation.

B
It transfers heat to the surroundings by radiation.

C
It transfers heat to the surroundings by conduction.

D
It absorbs heat from the surroundings by conduction.
Question 4
1 / -0

What is the direction of transfer of heat by the process of convection?

A
Sideways

B
Upwards

C
Downwards

D
In all the directions
Question 5
1 / -0

Study the following diagram carefully and choose the correct option.

A
Transfer of heat from the burner to the pan is by conduction only.

B
Transfer of heat from the pan to water is by radiation.

C
Transfer of heat within water is by convection.

D
Transfer of heat throughout the process is by conduction.
Question 6
1 / -0

Which of the following objects are "hot"?

(i) Wooden handle of a frying pan being used for frying
(ii) Iced tea in a beaker
(iii) A spoon in a cup of hot milk
(iv) Ice cream
(v) Glowing light bulb

A
Only (i), (iii) and (iv)

B
Only (ii) and (iii)

C
Only (iii) and (v)

D
Only (i), (ii) and (iv)
Question 7
1 / -0

At what temperature does the water boil in a pressure cooker?

A
Nearly 100^oC

B
More than 100^oC

C
Less than 100^oC

D
Can't boil
Question 8
1 / -0

What is the temperature range of a clinical thermometer?

A
35^oC to 42^oC

B
94^oC to 100^oC

C
10^oC to 100^oC

D
30^oC to 40^oC
Question 9
1 / -0

Which part of the thermometer prevents the level of mercury from falling down on its own?

A
Kink

B
Bulb

C
Glass tube

D
Scale
Question 10
1 / -0

Water is taken in a flask and is heated from the bottom. By which process water gets heated in this experiment?

A
Convection

B
Conduction

C
Insulation

D
Radiation
Question 11
1 / -0

Which of the following statements is not true?

A
All the hot bodies radiate heat.

B
The transfer of heat by radiation requires a medium.

C
The temperature of an object increases due to the absorption of heat by the object.

D
From the sun, the heat reaches us by the process known as radiation.
Question 12
1 / -0

If one-half of a slab of ice is covered with a white cloth and the other half is covered with a black cloth, then which of the following statements is correct?

A
No ice will melt under the white cloth.

B
No ice will melt under the black cloth.

C
More ice will melt under the white cloth as compared to the black cloth.

D
More ice will melt under the black cloth as compared to the white cloth.
Question 13
1 / -0

What is the upper range of temperature of a laboratory thermometer?

A
100°C

B
108°C

C
110°C

D
142°C
Question 14
1 / -0

Which of the following thermometers do not use mercury?

A
Digital thermometer

B
Laboratory thermometer

C
Clinical thermometer

D
Maximum - minimum thermometer
Question 15
1 / -0

Two bodies, A and B are at the same temperature (50^oC). They are placed in contact. The final result will be

A
temperature of A becomes 100^oC

B
temperature of B becomes 100^oC

C
temperatures of both A and B become 100^oC

D
no change in temperature occurs

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Heat Test - 7

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Heat Test - 7

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Question 1

Radiation

Convection

Conduction

The amount of heat lost by all the modes will be the same

Question 2

heat is transferred from the hotter end to the colder end of an object

heat is transferred from the colder end to the hotter end of an object

heat is not transferred between the two ends of an object

heat is radiated by all hot bodies

Question 3

It absorbs heat from the surroundings by radiation.

It transfers heat to the surroundings by radiation.

It transfers heat to the surroundings by conduction.

It absorbs heat from the surroundings by conduction.

Question 4

Sideways

Upwards

Downwards

In all the directions

Question 5

Transfer of heat from the burner to the pan is by conduction only.

Transfer of heat from the pan to water is by radiation.

Transfer of heat within water is by convection.

Transfer of heat throughout the process is by conduction.

Question 6

Only (i), (iii) and (iv)

Only (ii) and (iii)

Only (iii) and (v)

Only (i), (ii) and (iv)

Question 7

Nearly 100oC

More than 100oC

Less than 100oC

Can't boil

Question 8

35oC to 42oC

94oC to 100oC

10oC to 100oC

30oC to 40oC

Question 9

Kink

Bulb

Glass tube

Scale

Question 10

Convection

Conduction

Insulation

Radiation

Question 11

All the hot bodies radiate heat.

The transfer of heat by radiation requires a medium.

The temperature of an object increases due to the absorption of heat by the object.

From the sun, the heat reaches us by the process known as radiation.

Question 12

No ice will melt under the white cloth.

No ice will melt under the black cloth.

More ice will melt under the white cloth as compared to the black cloth.

More ice will melt under the black cloth as compared to the white cloth.

Question 13

100°C

108°C

110°C

142°C

Question 14

Digital thermometer

Laboratory thermometer

Clinical thermometer

Maximum - minimum thermometer

Question 15

temperature of A becomes 100oC

Nearly 100^oC

More than 100^oC

Less than 100^oC

35^oC to 42^oC

94^oC to 100^oC

10^oC to 100^oC

30^oC to 40^oC

temperature of A becomes 100^oC

temperature of B becomes 100^oC

temperatures of both A and B become 100^oC