Entropy Transfer Mechanisms MCQ

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• Which of the following explains that there is no entropy transfer associated with work.
  ক

  working of flywheel

  খ

  compression of spring

  গ

  raising of weight by a certain height

  ঘ

  all of the mentioned
• The first law of thermodynamics makes no distinction between heat transfer and work.
  ক

  true

  খ

  false
• What happens when heat is added to the system?
  ক

  dQ is positive

  খ

  dS=dQ/T

  গ

  entropy of the system increases

  ঘ

  all of the mentioned
• The entropy of a system ____ by ____ when the mass of amount m enters it.
  ক

  decreases, ms

  খ

  increases, ms

  গ

  decreases, s/m

  ঘ

  increases, s/m
• Mass contains
  ক

  entropy

  খ

  energy

  গ

  both of the mentioned

  ঘ

  none of the mentioned
• ____ is exchanged during work interaction, whereas both ____ and ____ are exchanged during heat transfer.
  ক

  energy, energy and entropy

  খ

  entropy, energy and entropy

  গ

  mass, energy and entropy

  ঘ

  none of the mentioned
• The sign of entropy transfer is opposite to the sign of heat transfer.
  ক

  true

  খ

  false
• If heat Q flows reversibly from the system to the surroundings at To,
  ক

  entropy increase of the surroundings is Q/To

  খ

  entropy of the system is reduced by Q/To

  গ

  system has lost entropy to the surroundings

  ঘ

  all of the mentioned
• Entropy transfer for an adiabatic transfer is zero.
  ক

  true

  খ

  false
• Entropy can be transferred to or from a system in which of the following forms?
  ক

  heat transfer

  খ

  mass flow

  গ

  both of the mentioned

  ঘ

  none of the mentioned