Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the Thermodynamics. In this article, we will provide 50+ MCQ questions on the Thermodynamics, along with detailed solutions to help you prepare for the JEE Mains exam.
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These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Thermodynamics JEE Mains MCQ Questions with Answers.
Thermodynamics JEE Mains MCQ
Which of the following statements is true regarding the first law of thermodynamics?
A) Energy is neither created nor destroyed.
B) Energy flows from a lower temperature to a higher temperature.
C) The entropy of a system always decreases.
D) The internal energy of a system is constant.
Which of the following processes is endothermic?
A) Freezing of water
B) Combustion of gasoline
C) Condensation of steam
D) Dissolution of salt in water
The standard enthalpy of formation of an element in its most stable form is:
A) Zero
B) Positive
C) Negative
D) Cannot be determined
The value of ΔG° for a spontaneous reaction is:
A) Positive
B) Negative
C) Zero
D) Cannot be determined
The entropy of a system is a measure of:
A) Energy content
B) Disorder
C) Temperature
D) Pressure
Which of the following processes is accompanied by a decrease in entropy?
A) Melting of ice
B) Evaporation of water
C) Mixing of two gases
D) Condensation of steam
The standard enthalpy change of a reaction can be determined using:
A) Hess’s law
B) Kirchhoff’s law
C) Le Chatelier’s principle
D) Avogadro’s law
The thermodynamic state function that accounts for the randomness or disorder of a system is:
A) Enthalpy
B) Entropy
C) Internal energy
D) Gibb’s free energy
The enthalpy change for a chemical reaction can be determined experimentally using:
A) Calorimetry
B) Spectroscopy
C) Chromatography
D) Gravimetry
Which of the following is an extensive property of a system?
A) Temperature
B) Pressure
C) Volume
D) Density
Which of the following statements is true regarding the second law of thermodynamics?
A) Energy is conserved in all processes.
B) Energy flows from a higher temperature to a lower temperature.
C) The entropy of a system always increases.
D) The internal energy of a system is constant.
The standard entropy change (ΔS°) for a reaction is positive. What does it indicate about the reaction?
A) The reaction is spontaneous at all temperatures.
B) The reaction is non-spontaneous at all temperatures.
C) The reaction is spontaneous at high temperatures.
D) The reaction is spontaneous at low temperatures.
Which of the following processes is exothermic?
A) Melting of ice
B) Sublimation of dry ice
C) Dissolution of ammonium nitrate in water
D) Formation of a metal oxide from its elements
The standard Gibbs free energy change (ΔG°) for a reaction is negative. What does it indicate about the reaction?
A) The reaction is spontaneous at all temperatures.
B) The reaction is non-spontaneous at all temperatures.
C) The reaction is spontaneous at high temperatures.
D) The reaction is spontaneous at low temperatures.
Which of the following is a state function?
A) Heat
B) Work
C) Enthalpy
D) Temperature
Which of the following equations represents the first law of thermodynamics?
A) ΔU = q + w
B) ΔG = ΔH – TΔS
C) ΔH = ΔE + PΔV
D) ΔS = qrev/T
Which of the following processes is spontaneous at all temperatures?
A) Freezing of water
B) Vaporization of water
C) Condensation of water vapor
D) Sublimation of ice
The entropy change (ΔS) for a reversible process is:
A) Always positive
B) Always negative
C) Zero
D) Can be positive, negative, or zero depending on the process
The value of ΔG for a spontaneous process is:
A) Always positive
B) Always negative
C) Zero
D) Can be positive, negative, or zero depending on the process
Which of the following statements is true regarding an isothermal process?
A) The temperature of the system remains constant.
B) The pressure of the system remains constant.
C) The volume of the system remains constant.
D) The internal energy of the system remains constant.
Which of the following statements is true regarding the concept of entropy?
A) Entropy of a system always decreases in a spontaneous process.
B) Entropy of a system always increases in a spontaneous process.
C) Entropy of a system remains constant in a spontaneous process.
D) Entropy of a system is unrelated to spontaneity.
Which of the following factors affect the magnitude of entropy change in a process?
A) Temperature and pressure
B) Enthalpy and entropy
C) Volume and moles of substances involved
D) Heat and work
The standard Gibbs free energy change (ΔG°) for a reaction can be determined using:
A) Hess’s law
B) Kirchhoff’s law
C) Le Chatelier’s principle
D) Thermodynamic tables
The change in enthalpy (ΔH) of a reaction is positive. What does it indicate about the reaction?
A) The reaction is exothermic.
B) The reaction is endothermic.
C) The reaction is spontaneous.
D) The reaction is non-spontaneous.
Which of the following processes is characterized by a decrease in both enthalpy and entropy?
A) Sublimation
B) Melting
C) Freezing
D) Condensation
Which of the following statements is true regarding spontaneous processes?
A) Spontaneous processes are always fast.
B) Spontaneous processes always lead to an increase in disorder.
C) Spontaneous processes can be reversed under any conditions.
D) Spontaneous processes do not require an input of energy.
The Clausius statement of the second law of thermodynamics relates to:
A) Energy conservation
B) Entropy increase
C) Heat flow from a higher to a lower temperature
D) Reversibility of processes
The standard enthalpy change (ΔH°) for a reaction is negative. What does it indicate about the reaction?
A) The reaction is exothermic.
B) The reaction is endothermic.
C) The reaction is spontaneous.
D) The reaction is non-spontaneous.
The change in internal energy (ΔU) of a system is given by:
A) ΔU = q + w
B) ΔU = ΔH – TΔS
C) ΔU = q
D) ΔU = w
Which of the following factors affect the spontaneity of a process?
A) Enthalpy and entropy
B) Temperature and pressure
C) Volume and moles of substances involved
D) Heat and work
We hope there JEE MCQ of Class 11 Thermodynamics will help you to score an excellent rank in JEE Mains and Advanced. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
