WBCS.LIVE practice question

Which one of the following statement is correct?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Whenever there is a temperature difference, heat is the only way of energy transfer.
  2. On heating, the length and volume of the object remain exactly the same.
  3. Any energy transfer that does not involve temperature difference in some way is not heat.
  4. Any energy transfer always requires a temperature difference.

Correct answer and explanation

Correct answer: Any energy transfer that does not involve temperature difference in some way is not heat.