MDCAT Thermodynamics MCQs
Customize your practice drill: select target topics, configure your question limit (up to 180 MCQs per test), and choose your mode.
Total Topics
5
Selected Topics
1
Available MCQs
118
Question Limit
Up to 180
Select Topics to Practice
Questions will be drawn only from checked topics.
Test Configuration
Configure question count (limit 180) and testing mode.
Selected topics have 118 total questions. Test will draw 50 shuffled MCQs.
Sample Thermodynamics MCQs with answers
Try these questions, then open the answer to check your reasoning. Use the quiz above for more topics and a complete review.
Thermal Equilibrium
1. Thermal energy is also called:
- A. Internal energy
- B. Temperature of a body
- C. Kinetic energy
- D. Heat energy
View answer and explanation
Answer: D. Heat energy
Thermal energy is the internal energy of a body arising from the random kinetic motion of its molecules, and it is commonly called heat energy. Temperature measures only the average molecular kinetic energy (the hotness or coldness), while thermal energy is the total energy content. Hence option D is correct; internal energy, temperature and kinetic energy alone name related but distinct quantities.
First Law
2. A refrigerator receives of work and rejects of heat to the room. Heat removed from the cold space is:
- A.
- B.
- C.
- D.
View answer and explanation
Answer: A.
Energy conservation gives , so .
Thermodynamic Work
3. In which of the following conditions does the thermodynamic system NOT perform any work?
- A. Adiabatic condition
- B. Isobaric condition
- C. Isochoric condition
- D. Isothermal condition
View answer and explanation
Answer: C. Isochoric condition
In an isochoric process, the volume of the system remains constant, so no work is done (, where = 0). Option C is correct. The explanation reinforces the principle that work in thermodynamics is related to volume change.
About this unit
MDCAT Thermodynamics — Unit 43
873 practice MCQs covering Thermal Equilibrium, Specific Heat, Thermodynamic Work, First Law, Cp-Cv Relation. Select custom topics and sit tailored tests up to 180 questions per drill.
Common questions about Thermodynamics practice
How many Thermodynamics MCQs are available on DIFF. MDCAT?
The current Thermodynamics question bank contains 873 practice MCQs across 5 topics. This is the bank size, not the length of one test. Choose your topics and a question count from 1 to 180, limited by the questions available in those topics.
Which topics does the Thermodynamics quiz cover?
The selectable topics are Thermal Equilibrium, Specific Heat, Thermodynamic Work, First Law, Cp-Cv Relation. Use Select all for a broad chapter drill, Clear to start a focused selection, or choose individual topics. Questions are drawn from your chosen topics, so you can target a weak concept before returning to a wider test.
How do I build a custom Thermodynamics test?
Open the chapter builder, select one or more topics, enter your question count, and choose Tutor Mode or Timed Exam. The available-question total updates with your selection. Start Test generates a shuffled drill; you do not have to follow a fixed Quiz 1 or Quiz 2 sequence.
What is the difference between Tutor Mode and Timed Exam?
Tutor Mode gives feedback and an explanation after you choose an option, and you can change or clear that choice. Timed Exam runs a countdown and keeps explanations hidden until submission. Both modes let you move between questions, use the paper map, and submit for a complete review.
How do I review and download my Thermodynamics quiz?
Select Submit Quiz, then Submit & View Explanations. The review includes every question in your test, all options, your selection, the marked correct answer when a key is available, and the explanation. Download PDF saves a paginated review; Download Review saves an HTML copy you can open in a browser. The review also includes DIFF. MDCAT community links.
How should I use Thermodynamics MCQs to improve?
Start with a short tutor drill on one of these topics: Thermal Equilibrium, Specific Heat, Thermodynamic Work. Read the explanation for incorrect and uncertain answers, revise the relevant textbook section, and retry before taking a timed drill. Compare your reasoning with the answer key rather than memorising the option letter.