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Heat Flow and Temperature

Heat Flow and Temperature

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is a good conductor of heat?

  1. Glass
  2. Plastic
  3. Wood
  4. Copper
  5. Cotton
Question 2 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. The clinical thermometer range is between 35 degree celsius to 42 degree celsius.
b. Light coloured objects, absorb more heat radiations than the dark coloured objects.
c. A clinical thermometer has a kink that prevents the mercury to rise or fall.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 3 Multiple Choice (Single Answer)

Which of the following is/are the precautions to be observed while reading laboratory thermometer?

  1. The thermometer should be kept upright either by freely suspending it or by fixing it in cork, etc.
  2. The bulb of the thermometer should be completely surrounded by the liquid.
  3. The bulb of the thermometer should not touch the sides or the base of the container.
  4. The reading should be taken only when the level of the mercury is steady for 30 seconds or more.
  5. All of the above
Question 4 Multiple Choice (Single Answer)

Which of the following is a bad conductor of heat?

  1. Water
  2. Silver
  3. Iron
  4. Aluminium
  5. Gold
Question 5 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. No medium is required for transfer of heat by radiation.
b. The range in a laboratory thermometer is from 0 degrees to 90 degrees centigrade.
c. The process of transference of heat in material bodies due to the actual movement of the particles of the medium is called convection.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 6 Multiple Choice (Single Answer)

Which of the following form of energies is transferred from one body to another body due to temperature differences between them?

  1. Sound energy
  2. Heat energy
  3. Electrical energy
  4. Light energy
  5. Magnetic energy
Question 7 Multiple Choice (Single Answer)

Which of the following is not a condition for the transfer of heat energy by conduction between two objects?
a. The two objects must be in contact with one another.
b. The objects must be made up of same metal, so that heat energy can transfer from one to another.
c. The temperature of both the objects must be different from one another.

  1. Only a
  2. Only a and c
  3. Only b
  4. Only b and c
  5. Only c
Question 8 Multiple Choice (Single Answer)

Which of the following instruments is used to measure very high temperatures like those of flames, furnaces, ovens. etc.

  1. Clinical thermometer
  2. Laboratory Thermometers
  3. Bimetal thermometer
  4. Anemometer
  5. None of the above
Question 9 Multiple Choice (Single Answer)

Rahul's mother wants to check the body temperature of her son. Which of the following device should she use?

  1. Clinical thermometer
  2. Laboratory thermometer
  3. Anemometer
  4. Maximum - Minimum thermometer
  5. Bimetallic thermometer
Question 10 Multiple Choice (Single Answer)

Convection cannot take place in _______________.

  1. water
  2. mercury
  3. carbon dioxide
  4. air
  5. milk
Question 11 Multiple Choice (Single Answer)

The normal temperature of human body is ____________.

  1. 37oC
  2. 37oF
  3. 37 K
  4. 98.6oC
  5. 98.6 K
Question 12 Multiple Choice (Single Answer)

By which of the following processes is the impure and warm air inside a room continuously replaced by fresh air from outside?

  1. Conduction
  2. Ventilation
  3. Radiation
  4. Convection
  5. Refrigeration
Question 13 Multiple Choice (Single Answer)

Which of the following is the lower standard point of ice?

  1. - 10oC
  2. 37oC
  3. 0oC
  4. 100oC
  5. 90oC
Question 14 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. Convection is the fastest mode of heat transfer from a hot body to a cold body.
b. Black bodies are good absorbers of radiant heat whereas white bodies are poor absorbers of radiant heat.
c. Convection is not possible in a solid because the molecules of a solid are held strongly due to intermolecular forces.

  1. Only c
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only a
Question 15 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. The undersides of a cooking vessel is made black because black underside absorbs radiant heat rapidly from the fire.
b. The radiant heat, a kind of electromagnetic energy, travels in space at the speed of 3 * 105 km/sec.
c. The process of convection is not possible in air.

  1. Only c
  2. Only a and b
  3. Only a
  4. Only b
  5. Only b and c
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