The graph shown in the figure represents...

The graph shown in the figure represents change in the temperature of 5 kg of a substance as it absorbs heat at a costant rate of 42 kJ `"min"^(-1)`. The latent heat of vaporization of the substance is :

`96"kJ kg"^(-1)`

`126"kJ kg"^(-1)`

`84"kJ kg"^(-1)`

`12.6kJ kg"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

COMMUNICATION SYSTEM
DC PANDEY ENGLISH|Exercise Only One Option is Correct|27 Videos
ELASTICITY
DC PANDEY ENGLISH|Exercise Medical entrances s gallery|21 Videos

Similar Questions

Explore conceptually related problems

Heat required to raise the temperature of 1 mole of a substance by 1^(@) C is called

The amount of heat required to change the state of 1 kg of substance at constant temperature is called

The diagram below shows the change of phases of a substance on a temperature vs time graph on heating the substance at a constant rate. What is the boiling and melting point of the substance ?

The amount of heat measured in calories needed to raise the temperature of 1 gram of substance by 1 degree centigrade is known as

Heat is supplied to a certain homogeneous sample of matter, at a uniform rate. Its temperature is plotted against time, as shown Which of the following conclusions can be drawn? (i) Its specific heat capacity is greater in the solid state than the liquid state. (ii) Its specific heat capacity is greater in the liquid state than in the solid state. (iii) Its latent heat of vaporization is greater than its latent heat of fusion. (iv) Its latent heat of vaporization is smaller than its latent heat of fusion

Water at 0^@C was heated until it started to boil and then until it all changed to steam. The time required to heat water from 0^@C to 100^@C is 5 min and the time to change boiling water to steam is 28 minutes. If the flame supplied heat at a constant rate, the specific latent heat of vaporization of water (neglecting heat losses, container etc. is (in J//g ). (specific heat of water s =4.2 J//g )

In figure , heat is added to a pure substance in a closed container rate. A graph of the temperature of the substance as a function of time is shown here , If L_(F) = heat of fusion and L_(V) = heat of vaporization . What is the value of the ratio L_(V)//L_(F) for this substance ?

The diagram below shows the change of phases of a substance on a temperature vs time graph on heating the substance at a constant rate. Why is the slope of CD less than slope of AB ?

The amount of heat required to raise the temperature of 75 kg of ice at 0^oC to water at 10^oC is (latent heat of fusion of ice is 80 cal/g, specific heat of water is 1 cal/ g^oC )

DC PANDEY ENGLISH-CURRENT ELECTRICITY-All Questions

Two thin metallic spherical shells of radii r(1) and r(2) (r(1)lt r(2...
Text Solution
|
A sphere of diameter 7 cm and mass 266.5 g floats in a bath of liquid....
Text Solution
|
The graph shown in the figure represents change in the temperature of ...
Text Solution
|
The density of a material A is 1500kg//m^(3) and that of another mater...
Text Solution
|
Three identical rods AB, CD and PQ are joined as shown. P and Q are mi...
Text Solution
|
Spheres P and Q are uniformally constructed from the same material whi...
Text Solution
|
A container X has volume double that of container Y and both are conne...
Text Solution
|
A givne mass of a gas expands from a state A to the state B by three p...
Text Solution
|
The figure shows the graph of logarithmic reading of pressure and volu...
Text Solution
|
An ideal monoatomic gas is carried around the cycle ABCDA as shown in ...
Text Solution
|
In a thermodynamic process, pressure of a fixed mass of gas is changed...
Text Solution
|
The relation between U, p and V for an ideal gas in an adiabatic proce...
Text Solution
|
A thermal insulated vessel contains some water at 0^(@)C. The vessel i...
Text Solution
|
The temperature drop through each layer of a two layer furnace wall is...
Text Solution
|
Three different arrangemnets of matrials 1 and 2,3 to from a wall Thre...
Text Solution
|
On a pT diagram, a cyclic process is performed as shown. Where is the ...
Text Solution
|
A monoatomic ideal is used as the working substance for the carnot cyc...
Text Solution
|
Figure illustrates a cycle conducted with n moles of an ideal gas. In ...
Text Solution
|
One mole of a diatomic gas undergoes a process P = P(0)//[1 + (V//V(0)...
Text Solution
|
3 moles of an ideal mono atomic gas performs a cycle as shown in fig. ...
Text Solution
|