A substance is heated by a constant power its temperature verses time graph is shown, the value of `S_(solid), S_(liquid), S_(gas)` is

A well insulated substance in solid state is heated at a constant rate until it vaporizes completely. The temperature-time graph of the substance is shown below . Which of the following statements is//are true?

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 ?

Solar constant (S) depends upon the temperature of the Sun

If specific ehat capacity of a substance in solid and liquid state is proportional to temperature of the substance, then if heat is supplied to the solid intially at -20^(@)C (having melting 0^(@)C ) at contant rate. Then the temperature dependence of solid with time will be best represented by:

A vessel contains M grams of water at a certain temperature and water at certain other temperature is passed into it at a constant rate of mg//s . The variation of temeprature of the mixture with time is shown in Fig. The values of M and m are, respectively (the heat exhanged after a long time is 800 cal)

A solid material is supplied with heat at a constant rate. The temperature of the material is changing with heat input as shown (i) AB: change of state from solid to liquid. CD: change of state from liquid to vapour (ii) When CD=2AB , i.e., latent heat of vapourization is twice the latent heat of fusion of the substance. (iii) The reciprocal of slope of DE represents the heat capacity of vapour state of substance . (iv) If slope of OAgt slope of BC, i.e., specific heat of liquid state is greater than specific heat that of solid state.

A substance is in the solid from at 0^(@)C . The amount of heat added to this substance and its temperature is plotted in the graph . The specific heat capacity of the solid substance is 0.5 "cal"//"g"^(@)C . Specific heat capacity in the liquid state is -

A substance is in the solid from at 0^(@)C . The amount of heat added to this substance and its temperature is plotted in the graph . The specific heat capacity of the solid substance is 0.5 "cal"//"g"^(@)C . Latest heat capacity in melting process is -

A substance is in the solid from at 0^(@)C . The amount of heat added to this substance and its temperature is plotted in the graph . The specific heat capacity of the solid substance is 0.5 "cal//g"^(@)C . The mass of the substance is -

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 ?