Class 8 NSO/Heat/Temperature and Heat Quiz

The temperature of the sun is measured with

• Platinum thermometer

• Gas thermometer

• Pyrometer

• Vapour pressure thermometer

On which of the following scales of temperature, the temperature is never negative?

• Celsius

• Fahrenheit

• Reumer

• Kelvin

Temperature is a

• microscopic concept

• macroscopic concept

• space-time concept

• none of the above

According to kinetic theory of gases, at absolute zero of temperature

• water freezes

• liquid helium freezes

• molecular motion stops

• liquid hydrogen freezes

Of the following, the one which has the highest specific heat is

• Aluminium

• Water

• Ice

• none of these

If a liquid is heated in space under no gravity, the transfer of heat will take place by process of

• conduction

• convection

• radiation

• can not be heated in the absence of gravity

5 kg of water at 80 deg * C is taken in a bucket of negligible heat capacity, 15 kg of water is added to it. What is the temperature of the mixture? (Neglect the thermal capacity of the bucket)

• 45 deg * C

• 65 deg * C

• 85 deg * C

• 35 deg * C

500 g of water at 100 deg -C is mixed with 300 g at 30 deg C . Find the the temperature of the mixture. Specific heat of water = 4.2 J g^ -1 C ^ - 1

• 73.8 deg * C

• 53.8 deg * C

• 40 deg * C

• 60 deg * C

The temperature of a room is 77 deg * F What would it be on the Celsius scale?

• 25°C

• 45 deg * C

• 60°C

• 350 deg * C