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MCQs on Reversible and Irreversible Reaction

MCQs on Reversible and Irreversible Reaction

  1. The net energy change in a reversible cyclic process is
  1. 3/2 RT
  2. zero
  3. always > 0
  4. always < 0

Answer: (b)

  1. Which of the following is an extensive property?
  1. temperature
  2. pressure
  3. mass/volume ratio
  4. energy

Answer: (d)

  1. Which of the following represents the largest amount of energy?
  1. 1 electron volt
  2. 1 erg
  3. 1 calorie
  4. 1 joule

Answer: (c)

  1. Which of the following is correct for an adiabatic process?
  1. ????E = q
  2. q = 0
  3. q = +w
  4. P???? V = 0

Answer: (b)

  1. The mixing of gases is generally accompanied by
  1. decrease in entropy
  2. a decrease in free energy
  3. change in heat content
  4. increase in free energy

Answer: (b)

  1. One litre atmosphere is approximately equal o
  1. 101J
  2. 8.314J
  3. 931J
  4. 19.2J

Answer: (a)

  1. The enthalpy change for a given reaction at 298K is -x J/mol. If the reaction occurs spontaneously at 298K the entropy change at that temperature
  1. can be negative but larger than x/298
  2. can be negative but smaller than x/298
  3. cannot be negative
  4. cannot be positive

Answer: (b)

  1. The initial energy change (????U) of a process does not depend upon
  1. amount of substance undergoing the change
  2. temperature
  3. path of the process
  4. nature of substance undergoing the change

Answer: (c)

  1. Vibrational energy is
  1. partial potential and partly kinetic
  2. only potential
  3. only kinetic
  4. neither kinetic nor potential

Answer: (a)

  1. The total entropy change for a system and its surroundings increases if a process is
  1. exothermic
  2. endothermic
  3. reversible
  4. irreversible

Answer: (d)

 

 

 

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