Thermal Properties of Matter

Newton's law of cooling states that the rate of loss of heat is proportional to:

1. Temperature of surroundings only
2. Difference in temperature between body and surroundings
3. Mass of body only
4. Volume of body only

The process of heat transfer in fluids due to the actual movement of particles is:

1. Conduction
2. Convection
3. Radiation
4. Reflection

A good conductor of heat is:

1. Wood
2. Plastic
3. Copper
4. Rubber

The heat required to change the state of a substance without changing its temperature is called:

1. Specific heat
2. Latent heat
3. Thermal conductivity
4. Radiation heat

The temperature at which a solid changes into a liquid is called:

1. Boiling point
2. Melting point
3. Freezing point
4. Sublimation point

The mode of heat transfer that does not require any medium is:

1. Conduction
2. Convection
3. Radiation
4. Evaporation

Black surfaces are:

1. Poor absorbers and poor emitters
2. Good absorbers and good emitters
3. Good reflectors only
4. Poor conductors only

Heat transfer in solids mainly takes place through:

1. Convection
2. Radiation
3. Conduction
4. Evaporation

Water shows anomalous expansion between:

1. 0°C and 4°C
2. 4°C and 10°C
3. 10°C and 20°C
4. 20°C and 50°C

The coefficient of linear expansion is measured in:

1. m/s
2. K⁻¹
3. J/kg
4. N/m

The phenomenon of change in length, area, or volume of a substance due to temperature change is called:

1. Radiation
2. Thermal expansion
3. Conduction
4. Convection

The SI unit of specific heat capacity is:

1. J/kg K
2. J/kg
3. Calorie
4. Watt

The amount of heat required to raise the temperature of a body depends on:

1. Mass only
2. Specific heat capacity only
3. Temperature change only
4. Mass, specific heat capacity, and temperature change

Heat is transferred from one body to another when there is a difference in:

1. Mass
2. Temperature
3. Volume
4. Density

The SI unit of temperature is:

1. Celsius
2. Fahrenheit
3. Kelvin
4. Joule