Energy can travel through air or vaccum as
Heat
Electricity
Wind
Electromagnetic waves
Freezing point of alcohol is
- 100oC
0oC
- 10oC
- 112oC
Which of the following is useful in reducing the loss of heat energy?
Conductors
Insulators
Super conductors
Semi conductors
Heat energy is carried by electromagnetic waves in
Conduction
Convection
Radiation
All the above
The amount of heat contained in a body depends on the
Material of the body
Mass of the body
Temperature of the body
SI unit of heat is
Joule
Calorie
Kilo calorie
Celsius
Freezing point of mercury is
- 39oC
The total amount of heat of a substance is related to its
Mass
Volume
Density
Transfer of heat through direct contact is called
Electrolysis
Which of the following does not need any material medium for heat transfer?
