Shortcut Methods
JEE EXAM:
Specific heat capacity shortcut:
- The specific heat capacity of water is approximately 1 calorie per gram per degree Celsius (cal/g/°C).
- The specific heat capacity of most metals is around 0.1 cal/g/°C.
- The specific heat capacity of gases is generally much lower than that of solids and liquids.
Thermal conductivity shortcut:
- The thermal conductivity of metals is generally much higher than that of non-metals.
- The thermal conductivity of a substance increases with increasing temperature.
Thermal expansion shortcut:
- The coefficient of thermal expansion of most solids and liquids is positive, meaning that the substance expands when heated.
- The coefficient of thermal expansion of gases is negative, meaning that the substance contracts when heated.
Latent heat of fusion shortcut:
- The latent heat of fusion of a substance is equal to the amount of heat required to melt one gram of the substance at its melting point.
Latent heat of vaporization shortcut:
- The latent heat of vaporization of a substance is equal to the amount of heat required to vaporize one gram of the substance at its boiling point.
CBSE BOARD EXAM:
- The specific heat capacity of water is 4.18 J/g/°C.
- The thermal conductivity of copper is 401 W/m/°C.
- The coefficient of thermal expansion of steel is 12 x 10^-6 °C^-1.
- The latent heat of fusion of ice is 334 J/g.
- The latent heat of vaporization of water is 2260 J/g.
