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and its boiling point is 
.Which row gives the correct state of the substance at the given temperatures?
and a beaker of boiling water are both in a laboratory. The laboratory is at 
as shown below.
and its temperature is noted every minute. The results are shown in the table below.
)
)
)
)
. When the thermometer is placed in pure melting ice, the mercury level falls to 
.
can be marked on the stem?
at 
absorbs thermal energy from the surroundings at a rate of 
. The specific latent heat of fusion of ice is 
. How long will it take for the ice cube to melt?
. No water is visible in the beaker until 
has passed. After 
is put into a drink at a temperature of 
. After a short time, some of the ice has melted and the drink has cooled to a temperature of 
. What is the temperature of the remaining ice?
between melting point and boiling point of air? The melting point of the air is 
and the boiling point is 
.
to 
?
in Manchester and 
in London.
and freezes at 
. What is the temperature difference between the boiling point and the melting point of the substance in 
?
. The immersion heater is switched on as shown below.
. The inner edge of the box is 0.5 m long and it's walls are made of 5 cm thick material with thermal conductivity 
. Calculate the percentage of ice that melts in one hour if the ambient temperature is 
of ice at 
to water if the specific latent heat of fusion of ice is 
.
is supplied to a liquid of mass 
. Find the latent heat of vapourization of the liquid if the heat takes it to its boiling point.
of stearic acid changed state from liquid to solid. The specific latent heat of fusion of stearic acid is 
.
requires 
of heat energy to melt. What is the specific latent heat of fusion of the solid?
of ice at its melting point if the specific latent heat of fusion of water is 
.
, if the specific latent heat of vapourization of water is 
, calculate the mass of the quantity of water.
of ice if it's latent heat of fusion is 
.
of water if it's latent heat of vapourization is 
?
. How much heat is required to change 
of ice at 
into water at the same temperature?
of heat is required to completely turn 
of a certain liquid to gas. Find the latent heat of vapourization of the liquid neglecting heat loss.
of water at 
is dropped onto a large block of ice at 
. The water cools to 
and the specific latent heat of fusion of ice is 
.
of water at 
is poured into an insulated beaker. 
of ice at 
is added to the water. The water is stirred until it's temperature has fallen to 
of ice does not melt and the specific heat capacity of water is 
.
is at its melting point. The specific latent heat of fusion of lead is 
. How much energy is required to completely melt the block?
chunk of liquid lead at 
takes 
of heat to turn into 
. How long does it take for 
of the water to vaporise? The specific latent heat of vaporisation of water is 
.
, is used. The mass of ice before heating at 
is recorded to be 
. After heating for 
, the mass of ice at 
. What is the value of the specific latent heat of fusion of ice?
of water was poured into a beaker and allowed to freeze at 
. Find the quantity of heat lost to the surrounding if the density of water is 
and the specific latent heat of fusion of water is 
.
to turn 
of water at 
to steam. What is the specific heat of vaporisation of water?
chunk of liquid lead at 
takes 
of heat to turn into gaseous lead at 
of liquid lead are left, what is the latent heat of vaporization of the lead?
