WBCS.LIVE practice question

A liquid remains hot or cold for a long time in thermos flask because there is no loss or gain of heat by

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

Answer options

  1. conduction
  2. convection and radiation
  3. Both (a) and (b)
  4. None of the above

Correct answer and explanation

Correct answer: Both (a) and (b)