Want to see correct answers?
Login or join for free!
  Chemistry Worksheets
Looking for Chemistry worksheets?
Check out our pre-made Chemistry worksheets!
Share/Like This Page
Filter By Grade

You are browsing Grade 12 questions. View questions in All Grades.

Grade 2 Grade 6 Grade 8 Grade 9 Grade 10 Grade 11 Grade 12 College

Browse Questions

Twelfth Grade (Grade 12) Thermodynamics Questions

You can create printable tests and worksheets from these Grade 12 Thermodynamics questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

Previous Page 1 of 2 Next
Grade 12 Thermodynamics
According to second law of thermodynamics, heat energy cannot be completely converted into useful work owing to                                       .
  1. the entropy of the system
  2. the enthalpy of the system
  3. the internal energy of the system
  4. the translational energy of the system
Grade 12 Thermodynamics
Which of the following factors does not affect the heat of reaction?
  1. Physical state
  2. Pressure
  3. Temperature
  4. Volume
Grade 12 Thermodynamics
Which system permits energy and matter to be exchanged with the surroundings?
  1. Isolated
  2. Open
  3. Adiabatic
  4. Closed
Grade 12 Thermodynamics
Which of the following equations is used to represent the First Law of Thermodynamics for a closed system, according to the IUPAC convention?
  1. ΔU=Q+W
  2. ΔU=W-Q
  3. ΔU=Q-W
  4. ΔU=Q+2W
Grade 12 Thermodynamics
Which of the following is an example of spontaneous processes?
  1. Electrolysis
  2. Combustion
  3. Photosynthesis
  4. The rusting of iron
Grade 12 Thermodynamics
Which of the following terms comprises the surroundings and the system involved in the study of thermodynamics?
  1. an open system
  2. a closed system
  3. an isolated system
  4. the universe
Grade 12 Thermodynamics
If ΔS denotes entropy change, then what is the entropy change for a reversible adiabatic process?
  1. ΔS=0
  2. ΔS=1
  3. ΔS<1
  4. ΔS>1
Grade 12 Thermodynamics
The enthalpies of all the elements in their standard states at 298 K are
  1. one.
  2. very high.
  3. zero.
  4. very low.
Grade 12 Thermodynamics
Which of the following expressions correctly characterizes an isolated system?
  1. ∆U<0
  2. ∆U=0
  3. ∆U>0
  4. None of the above
Grade 12 Thermodynamics
Which of the following systems only allows for the exchange of energy with the surroundings?
  1. Closed
  2. Isolated
  3. Open
  4. None of the above
Grade 12 Thermodynamics
Which of the following expressions provides the correct conversion between Joules and Calories?
  1. 1 Joule (J) = 0.239 Cal
  2. 1 Joule (J) = 0.547 Cal
  3. 1 Joule (J) = 0.345 Cal
  4. 1 Joule (J) = 0.451 Cal
Grade 12 Thermodynamics
In which of the following systems does the temperature of the process remain constant throughout the system?
  1. Isotherm process
  2. Adiabatic process
  3. Reversible process
  4. Irreversible process
Grade 12 Thermodynamics
In which of the following cases would ∆U in ∆U=Q+W be less than zero?
  1. Work is done on the system.
  2. Work is done by the system.
  3. The magnitudes of heat and work are equivalent.
  4. The magnitude of heat is greater than that of the work.
Previous Page 1 of 2 Next