Heat Test

Result

Heat Test - 2

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

Which of the following correctly defines the water equivalent of a body?

A
The mass of alcohol, which will be heated through 1^oC by the amount of heat required to raise the temperature of the body through 1^oC.

B
The mass of water, which will be heated through 1^oC by the amount of heat required to raise the temperature of the body through 1^oC.

C
The mass of water, which will be heated through any range of temperature.

D
The temperature by which 1 kg of water will be raised by equivalent heat.

Solution

Water equivalent of a substance is defined as the mass of water that will absorb or lose as same quantity of heat as the substance for the same change in temperature.
Question 2
1 / -0

Which of the following has the highest specific heat?

A
Water

B
Mercury

C
Kerosene

D
Copper

Solution

Of the given substances, water has the highest specific heat.
Question 3
1 / -0

When a body is heated, its temperature will rise if the body

A
does not expand

B
does not change its physical state

C
does not contract

D
changes its physical state

Solution

When a body is heated, its temperature will rise if the body does not change its physical state bacuse energy is lost in changing the state.
Question 4
1 / -0

Two blocks of ice when pressed together join to form one block of ice because

A
heat is produced during pressing, which melts the ice at the surface of contact of the 2 blocks and fuses them together

B
temperature decreases during pressing, thus lowering the melting point of ice

C
melting point of ice decreases, it melts and solidifies again when pressure is released

D
heat is transferred from the force transfer medium to the contact area, thus melting and fusing the ice

Solution

Two blocks of ice when pressed together join to form one block of ice because heat is produced during pressing which melts the ice at the surface of contact of the 2 blocks, thus fusing them together.
Question 5
1 / -0

A closed vessel is maintained at a constant temperature. It is first evacuated, and then vapour is injected into it continuously. The pressure of the vapours in the vessel

A
increases continuously

B
first increases and then remains constant

C
first increases and then decreases

D
none of the above

Solution

A closed vessel is maintained at a constant temperature. It is first evacuated, and then vapour is injected into it continuously. The pressure of the vapours in the vessel increases continuously.
Question 6
1 / -0

The door of a running refrigerator inside a closed room was left open. Which of the following observations will be seen?

A
The room will be warmed up gradually.

B
The temperature of the room will remain unaffected.

C
The room will become as cold as the refrigerator.

D
The room will be cooled slightly.

Solution

Refrigerator is a device that transfers heat from inside a box to its surroundings.

If you leave the door open, heat is merely recycled from the room into the refrigerator, then back into the room. A net room temperature increase would result from the heat of the motor that would be constantly running to move energy around in a circle.
Question 7
1 / -0

The highest temperature reached inside a pressure cooker will depend upon

A
the weight placed upon the vent and the area of the vent

B
the area of the vent and the material being cooked

C
the material being cooked and the weight placed upon the vent

D
the area of the vent only

Solution

Since pressure is directly proportional to surface area. Therefore, the highest temperature reached inside a pressure cooker will depend upon the weight placed upon the vent and the area of the vent.
Question 8
1 / -0

What happens when vapour condenses into liquid?

A
Its temperature drops.

B
Its temperature rises.

C
It absorbs heat.

D
It evolves heat.

Solution

It evolves heat when vapour condenses into liquid.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Heat Test - 2

Result

Heat Test - 2

Score

-

Rank

-

SHARING IS CARING

Question 1

The mass of alcohol, which will be heated through 1oC by the amount of heat required to raise the temperature of the body through 1oC.

The mass of water, which will be heated through 1oC by the amount of heat required to raise the temperature of the body through 1oC.

The mass of water, which will be heated through any range of temperature.

The temperature by which 1 kg of water will be raised by equivalent heat.

Solution

Question 2

Water

Mercury

Kerosene

Copper

Solution

Question 3

does not expand

does not change its physical state

does not contract

changes its physical state

Solution

Question 4

heat is produced during pressing, which melts the ice at the surface of contact of the 2 blocks and fuses them together

temperature decreases during pressing, thus lowering the melting point of ice

melting point of ice decreases, it melts and solidifies again when pressure is released

heat is transferred from the force transfer medium to the contact area, thus melting and fusing the ice

Solution

Question 5

increases continuously

first increases and then remains constant

first increases and then decreases

none of the above

Solution

Question 6

The room will be warmed up gradually.

The temperature of the room will remain unaffected.

The room will become as cold as the refrigerator.

The room will be cooled slightly.

Solution

Question 7

the weight placed upon the vent and the area of the vent

the area of the vent and the material being cooked

the material being cooked and the weight placed upon the vent

the area of the vent only

Solution

Question 8

Its temperature drops.

Its temperature rises.

It absorbs heat.

It evolves heat.

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.

The mass of alcohol, which will be heated through 1^oC by the amount of heat required to raise the temperature of the body through 1^oC.

The mass of water, which will be heated through 1^oC by the amount of heat required to raise the temperature of the body through 1^oC.