The total amount of heat of a substance is related to its
Mass
Volume
Density
All the above
Transfer of heat through direct contact is called
Conduction
Convection
Radiation
Electrolysis
When a solid is heated, it expands in
Length wise
Breadth wise
In all directions
No expansion takes place
SI unit of heat is
Joule
Calorie
Kilo calorie
Celsius
The lowest possible temperature is
0o C
- 100o C
- 273o C
- 200o C
The heat in a substance is due to its
Potential energy
Internal energy
Electrical energy
Magnetic energy
Which of the following does not need any material medium for heat transfer?
Energy can travel through air or vaccum as
Heat
Electricity
Wind
Electromagnetic waves
Freezing point of alcohol is
- 100oC
0oC
- 10oC
- 112oC
The temperature at which a liquid changes into a gas is called the
Boiling point
Melting point
Freezing point
