NEET Chemistry First Law MCQ Question
What does the first law of thermodynamics state about the energy of an isolated system?
The energy of an isolated system is constant.
The energy of an isolated system can increase.
The energy of an isolated system decreases over time.
The energy of an isolated system is variable.
Correct Answer
Detailed Explanation
The first law of thermodynamics states that the energy of an isolated system is constant, which is commonly referred to as the law of conservation of energy. This is reflected in the equation ∆U = q + w, indicating that internal energy changes depend only on initial and final states.
Found an issue with this question?
Related Questions
More from First Law
More from
Calculate the Gibbs free energy change (∆G) for a reaction at 298 K if the enthalpy change (∆H) is -150 kJ/mol and the entropy change (∆S) is -400 J/m...
Using Hess's Law, calculate the standard enthalpy change for the reaction: C(graphite, s) + 2H2(g) → CH4(g), given the following reactions: 1) C(graph...
Which of the following statements about enthalpy is correct?