Advertisements
Advertisements
Question
1 g ice of 0℃ melts to form 1 g water at 0℃. State whether the latent heat is absorbed or given out by ice.
Solution
Ice turns into water when it absorbs latent heat.
APPEARS IN
RELATED QUESTIONS
State the effect of an increase of impurities on the melting point of ice.
Which has more heat: 1 g ice at 0℃ or 1g water 0℃? Give reason.
The S.I. unit of specific latent heat is ______.
The specific latent heat of fusion of water is ______.
When a liquid is getting converted into solid, the latent heat is ………………………………
Water expands on reducing its temperature below ______°C.
What do you mean by the statement?
'The specific latent heat capacity of fusion of ice is 336 J per g'?
Define the following terms:
(i) Specific latent heat,
(ii) Specific latent heat of fusion.
A substance changes from its solid state to the liquid state when heat is supplied to it. What name is given to heat absorbed by the substance.
Explain why water is used in hot water bottles for fomentation and also as a universal coolant.
Match the columns.
| Column A | Column B |
| 1) Specific latent heat of fusion | a) Air saturated with vapour |
| 2) Specific latent heat of vaporisation | b) Solid converts into liquid |
| 3) Dew point temperature | c) liquid converts into gas |
Write the name.
Products obtained when sugar is heated.
During reheating, ice is converted to water at a temperature of 0 °C.
1 kg of dry air at a temperature of 40 °C can hold a maximum of 49 g of water vapour.
Write scientific reason.
Even if boiling water is constantly heated, its temperature does not rise.
Write scientific reason.
Use a pressure cooker to cook food in cold air.
Who introduced the term latent heat?
Calculate the amount of heat required to convert 200g of ice at 0°C into the water at 0°C Specific latent heat of fusion of ice = 336 Jg-1
Specific latent heat of a substance ______.
20 g of ice at 0°C absorbs 10,920 J of heat energy to melt and change to water at 50°C. Calculate the specific latent heat of fusion of ice. Specific heat capacity of water is 4200 J kg-1 K-1.
