مادے کی حرارتی خصوصیات

What is the freezing point of pure water on the Celsius scale?

• 1 0 degrees C
• 2 100 degrees C
• 3 273 degrees C
• 4 32 degrees C

What is 0 degrees C on the Kelvin scale?

• 1 0 K
• 2 273 K
• 3 373 K
• 4 100 K

The heat needed to raise 1 kg of a substance by 1 K is its:

• 1 Thermal expansion
• 2 Heat flow
• 3 Specific heat capacity
• 4 Latent heat

How much heat is needed to raise 2 kg of water by 10 K? (specific heat of water = 4200 J/kg K)

• 1 84000 J
• 2 8400 J
• 3 4200 J
• 4 42000 J

Which state of matter expands the most for the same rise in temperature?

• 1 Liquids
• 2 All expand equally
• 3 Solids
• 4 Gases

The heat absorbed when a liquid changes to gas at constant temperature is called:

• 1 Latent heat of vaporisation
• 2 Latent heat of fusion
• 3 Specific heat
• 4 Sensible heat

Which thermometer is used to measure body temperature?

• 1 Clinical thermometer
• 2 Laboratory thermometer only
• 3 Barometer
• 4 Hygrometer

When a solid melts, its temperature during melting:

• 1 Becomes zero
• 2 Rises quickly
• 3 Stays constant
• 4 Falls

The boiling point of water at normal pressure is:

• 1 0 degrees C
• 2 212 degrees C
• 3 50 degrees C
• 4 100 degrees C

A metal rod gets longer when heated. This is called:

• 1 Evaporation
• 2 Conduction
• 3 Contraction
• 4 Thermal expansion