The process in which a substance directly changes to its vapour form is called deposition.
Important Questions on Matter
Why is steam at a more effective heating agent than water at ?
Convert the following temperatures to the Celsius scale:
a.
b.?
Why is ice at more effective in cooling than the same quantity of water at ?
Convert the following temperatures to the Kelvin scale:
a.
b. ?
Match the items in column A with the items in column B.
| Column A | Column B |
| 1. Latent heat of vaporisation of water | a. No definite volume |
| 2. Latent heat of fusion of ice | b. Incompressible |
| 3. Solid | c. One Surface |
| 4. Liquid | d. |
| 5. Gas | e. |
Why does the temperature remain constant during the change of state?
Define the latent heat of fusion of ice. Give its value.
Define the terms:
a. melting point
b. boiling point.
The quantity of heat required to change of a solid into liquid at atmospheric pressure at its melting point is called
The latent heat of vaporisation of water is _____.
A. Define boiling point.
B. Why does temperature remain constant during boiling?
C. How does boiling differ from evaporation?
D. State the values displayed by the fellow student.
The SI unit of latent heat of fusion is _____.
(Enter your correct answer as or )
Define latent heat of vaporisation. Give its value for water.
