Physics

Heat

⛪ Science > Physics

Heat is ➲ Heat - Quiz

Q 1: The SI unit of temperature is

  • A Kelvin
  • B Celsius
  • C Fahrenheit
  • D Joule

Q 2: The temperature at which both the Fahrenheit and Centigrade scales have the same value is

  • A -600
  • B -400
  • C -200
  • D 00

Q 3: Gas thermometers are more sensitive than the liquid thermometers because the gases

  • A have low specific heat
  • B have high specific heat
  • C have large coefficient of expansion
  • D are lighter

Q 4: The absolute zero is a temperature at which

  • A Molecular motion in a gas would cease
  • B Water freezes
  • C All gases become liquid
  • D All gases become solid

Q 5: A change of 100 in Centigrade scale corresponds to what change in Fahrenheit scale?

  • A 180 F
  • B 210 F
  • C 100 F
  • D 150 F

Q 6: A liquid initially contracts when cooled down to 40 C but on further cooling down to 00 C, it expands. The liquid is

  • A Alcohol
  • B Water
  • C Molten iron
  • D Mercury

Q 7: A white and smooth surface is

  • A Good absorber and Bad reflector of Heat
  • B Bad absorber and Bad reflector of Heat
  • C Good absorber and Good reflector of Heat
  • D Bad absorber and Good reflector of Heat

Q 8: The clouds float in the atmosphere because of there low

  • A temperature
  • B velocity
  • C pressure
  • D density

Q 9: Low temperatures (cryogenies) find application in

  • A Space travel, surgery and magnetic levitation
  • B Surgery, magnetic levitation and telemetry
  • C Space travel, surgery and telemetry
  • D Space travel, magnetic levitation and telemetry

Q 10: When water is heated from 00 C to 100 C its volume

  • A increases
  • B decreases
  • C does not change
  • D first decreases and then increases

Q 11: The change of a solid into vapour directly is called

  • A vaporization
  • B freezing
  • C melting
  • D sublimation

Q 12: A hollow sphere of radius R, a hollow cube of side R and thin circular plate of radius R made up of some material, are all heated to 200C above room temperature. When left to cool in the room, which of them will reach the room temperature first?

  • A circular plate
  • B cube
  • C sphere
  • D all of them will reach the room temperature at the same time

Q 13: What is the principle by which a cooling system(Radiator) in a motor car works?

  • A conduction only
  • B convection
  • C radiation Only
  • D both conduction and radiation

Q 14: Which of the following is the best conductor of the heat?

  • A mercury
  • B silver
  • C leather
  • D benzene