300+ TOP MCQs on Reversible And Irreversible Reaction and Answers

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MCQs on Reversible And Irreversible Reaction :

1. The net energy change in a reversible cyclic process is
(A) 3/2 RT
(B) zero
(C) always > 0
(D) always < 0

Answer

Answer: (b)

2. Which of the following is an extensive property?
(A) temperature
(B) pressure
(C) mass/volume ratio
(D) energy

Answer

Answer: (d)

3. Which of the following represents the largest amount of energy?
(A) 1 electron volt
(B) 1 erg
(C) 1 calorie
(D) 1 joule

Answer

Answer: (c)

4. Which of the following is correct for an adiabatic process?
(A) ?E = q
(B) q = 0
(C) q = +w
(D) P? V = 0

Answer

Answer: (b)

5. The mixing of gases is generally accompanied by
(A) decrease in entropy
(B) a decrease in free energy
(C) change in heat content
(D) increase in free energy

Answer

Answer: (b)

6. One litre atmosphere is approximately equal o
(A) 101J
(B) 8.314J
(C) 931J
(D) 19.2J

Answer

Answer: (a)

7. 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
(A) can be negative but larger than x/298
(B) can be negative but smaller than x/298
(C) cannot be negative
(D) cannot be positive

Answer

Answer: (b)

8. The initial energy change (?U) of a process does not depend upon
(A) amount of substance undergoing the change
(B) temperature
(C) path of the process
(D) nature of substance undergoing the change

Answer

Answer: (c)

9. Vibrational energy is
(A) partial potential and partly kinetic
(B) only potential
(C) only kinetic
(D) neither kinetic nor potential

Answer

Answer: (a)

10. The total entropy change for a system and its surroundings increases if a process is
(A) exothermic
(B) endothermic
(C) reversible
(D) irreversible

Answer

Answer: (d)