Thermodynamics is a fundamental branch of physical chemistry that deals with the quantitative relationship between heat and other forms of energy. For students preparing for board exams and competitive foundations, understanding how energy transitions occur within a system is crucial. This chapter bridges the gap between chemical reactions and the physical laws of energy conservation, providing the tools to predict the spontaneity and extent of chemical processes.
In the CBSE curriculum, this chapter introduces core concepts such as internal energy, enthalpy, entropy, and Gibbs free energy. Mastering these concepts is essential not only for scoring well in Chemistry but also for understanding real-world applications like engine efficiency, chemical synthesis, and biological metabolism. This quiz is designed to test your conceptual clarity, numerical application, and critical thinking based strictly on NCERT guidelines.
40
Minutes
30
Questions
1 / -0
Marking
Q1. A system that can exchange both matter and energy with the surroundings is known as:
Closed system
Isolated system
Open system
Adiabatic system
Q2. Which of the following is an intensive property?
Mass
Volume
Enthalpy
Temperature
Q3. For an adiabatic process, which of the following is correct?
Q4. The mathematical expression for the First Law of Thermodynamics is:
Q5. Which of the following is a state function?
Heat
Work
Enthalpy
Heat capacity
Q6. In an isothermal expansion of an ideal gas into a vacuum (free expansion), the work done is:
Positive
Negative
Zero
Maximum
Q7. The relation between enthalpy change () and internal energy change () for a reaction involving gases is:
Q8. For the reaction , the value of is:
2
-2
4
-4
Q9. An endothermic reaction is one in which:
Heat is evolved
Heat is absorbed
Temperature increases
Enthalpy decreases
Q10. The enthalpy of all elements in their standard states at 298 K and 1 bar pressure is:
Unity
Zero
Less than zero
Different for each element
Q11. Which law states that the total enthalpy change for a reaction is the same whether it occurs in one step or multiple steps?
Le Chatelier's Principle
Hess’s Law
Joule-Thomson Effect
First Law of Thermodynamics
Q12. For a process to be spontaneous at all temperatures, the conditions must be:
and
and
and
and
Q13. The measure of randomness or disorder in a system is called:
Enthalpy
Internal Energy
Entropy
Gibbs Energy
Q14. For the process of sublimation of iodine, the sign of is:
Positive
Negative
Zero
Unpredictable
Q15. The criteria for equilibrium at constant temperature and pressure is:
...and 15 more challenging questions available in the interactive simulator.