Write four advantages of high latent heat of fusion of a substance.

Define latent heat of fusion of ice.

Define specific latent heat of fusion

The specific latent heat of fusioin of ice is:

The specific latent heat of fusion of water is :

A substance of mass M kg requires a power input of P wants to remain in the molten state at its melting point. When the power source is turned off, the sample completely solidifies in time t seconds. The latent heat of fusion of the substance is …….

A substance of mass M kg requires a power input of P wants to remain in the molten state at its melting point. When the power source is turned off, the sample completely solidifies in time t seconds. The latent heat of fusion of the substance is …….

Write advantages of bee keeping.

A substance initially in solid state at 0^@ C is heated. The graph showing the variation in temperature with the amount of heat supplied is shown in Fig. 11.7. If the specific heat capacity of the solid substance is 500 J kg^(-1)^@C^(-1) , use graph to find : (i) the mass of the substance, and (ii) the specific latent heat of fusion of the substance in the liquid state.

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.

The latent heat of fusion of a substance is always less than the latent heat vapourization or latent heat of sublimation of the same substace. Explain.