HEAT 21/10/24

1. If we add a lump of ice to a tumbler containing water

• Heat flows from water to ice .
• Heat flows from ice to water .
• Heat flows from water to ice if water is more .
• Heat flows from ice to water if ice is more .

2. The temperature of pure melting ice is :

• 0°C
• 100°C
• 95°C
• 98.6°F

3. A thermometer uses :

• Water
• Mercury
• Air
• None of the above

4. Which statements is correct :

• Iron rims are cooled before they are placed on cart wheels .
• A glass stopper gets tight on warming the neck of the bottle .
• Telephone wires sag in winter , but become tight in summer .
• A little space is left between two rails on a railway track.

5 . Five degree Celsius in Kelvin is

• 278
• 287
• 273
• 378