Zeroth Law of Thermodynamics MCQ. We covered all the Zeroth Law of Thermodynamics MCQ in this post for free so that you can practice well for the exam.
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MCQ on Zeroth Law of Thermodynamics for NEET Students
If the internal energy change of an ideal gas decreases by the same amount as the work done by the system, then the process is termed as a/an ………..
(A) cyclic
(B) isothermal
(C) adiabatic
(D) isochoric
Option c – adiabatic
A gas is cooled and it loses 50 J of heat. The gas contracts as it cools and works done on the system equal to 20 J are exchanged with the surroundings. The change in internal energy is
(A) 70 J
(B) – 30 J
(C) 30 J
(D) -70 J
Option b – – 30 J
Which of the following statements is CORRECT about entropy?
(A) At 0 °C, the entropy of a perfectly crystalline substance is taken to be zero.
(B) At absolute zero temperature, the entropy of a perfectly crystalline substance is positive.
(C) At absolute zero temperature, the entropy of all crystalline substances are taken to be zero.
(D) At absolute zero temperature, the entropy of a perfectly crystalline substance is taken to be zero.
Option d – At absolute zero temperature, the entropy of a perfectly crystalline substance is taken to be zero.
The heat of neutralization for the following reaction is 57.1 kJ/mol. NaOH + HCl → NaCl + H₂O Calculate the amount of heat released when 0.28 mole of NaOH is titrated against 0.28 mole of HCI.
(A) 16 kJ
(B) 14.5 kJ
(C) 18 kJ
(D) 26.2 kJ
Option a – 16 kJ
Among the following the intensive property is ………
(A) specific heat capacity
(B) entropy
(C) internal energy
(D) enthalpy
Option a – specific heat capacity
1 mole of Al4C3(s) reacts with H₂O in a closed vessel at 27 °C against atmospheric pressure. Work done for the process will be ………
(A) – 1800 cal
(B) – 600 cal
(C) +1800 cal
(D) zero cal
Option d – zero cal
The temperature of the system decreases in an ……….
(A) adiabatic compression
(B) isothermal expansion
(C) isothermal compression
(D) adiabatic expansion
Option d – adiabatic expansion
In a process, a system does 245 J of work on its surrounding by absorbing 60 J of heat. Calculate the change in internal energy of the system during the process.
(A) 90 J
(B) -185 J
(C) -180 J
(D) 225 J
Option b – -185 J
The change in entropy is less than zero for ……….
(A) sublimation of iodine
(B) dissociation of hydrogen
(C) formation of water
(D) thermal decomposition of calcium carbonate
Option c – formation of water
Which of the following are NOT state functions? i. q+w ii. q iii. W iv. H – TS
(A) Only i, ii, and iii
(B) Only ii and iii
(C) Only i and iv
(D) Only ii, iii, and iv
Option b – Only ii and iii
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