First Law for a Closed System MCQ

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• The first law of thermodynamics gives only the change on energy ΔE for the process.
  ক

  true

  খ

  false
• Which of the following an be considered as the definition of energy?
  ক

  Q=ΔE+W

  খ

  Q-W=ΔE

  গ

  first law of thermodynamics

  ঘ

  all of the mentioned
• Which of the following is the first law for a closed system undergoing a cycle?
  ক

  ∫dW=∫dQ

  খ

  J∫dW=∫dQ

  গ

  ∫dW=J∫dQ

  ঘ

  none of the mentioned
• The expression (ΣW)cycle=(ΣQ)cycle applies only to systems undergoing cycles.
  ক

  true

  খ

  false
• By first law of thermodynamics,
  ক

  Q=ΔE-W

  খ

  Q=ΔE+W

  গ

  Q=-ΔE-W

  ঘ

  Q=-ΔE+W
• Which of the following represents the energy in storage?
  ক

  heat

  খ

  work

  গ

  internal energy

  ঘ

  none of the mentioned
• It was Joule who first established that heat is a form of energy, and thus laid the foundation of the first law of thermodynamics.
  ক

  true

  খ

  false
• The value of constant of proportionality, J, has the value
  ক

  1

  খ

  0

  গ

  -1

  ঘ

  infinity
• Work input is directly proportional to heat and the constant of proportionality is called
  ক

  joule’s equivalent

  খ

  mechanical equivalent of heat

  গ

  all of the mentioned

  ঘ

  none of the mentioned
• Energy has different forms which include
  ক

  heat

  খ

  work

  গ

  all of the mentioned

  ঘ

  none of the mentioned