Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET Medical202625 April 2026Evening ShiftPhysicsThermodynamicsActual

Identify the INCORRECT statement for isobaric process.

Options

  1. Ap = 0
  2. BW 0
  3. CQ 0
  4. DU = 0

Correct answer

D. U = 0

Step-by-step solution

In an isobaric process, the pressure of the system remains constant, so p = 0 . The work done is given by W = p V . Since the volume changes, W 0 . The heat exchanged is Q = nC_p T . Since the temperature changes, Q 0 . The change in internal energy is U = nC_v T . Since the temperature changes, U 0 . The statement U = 0 is true for an isothermal process of an ideal gas, not an isobaric process. Therefore, U = 0 is the incorrect statement. Answer: U = 0

Practice Thermodynamics on Quantrex Academy →

More from Thermodynamics

The work done by an ideal gas during closed cycle 1 2 3 4 1 as shown in figure is 2026Which of the following statements is NOT CORRECT? In an isothermal process, a. there is perfect thermal equilibrium with environment. b. there is no change in internal energy durin 2026Let ₁ be the efficiency of a Carnot engine at T_H = 547^ C and T_C = 247^ C while ₂ is the efficiency at T_H = 847^ C and T_C = 147^ C . If ₁ = x 41 ₂ , the value of x is 2026A gas for which = 5 / 3 ( = C_p / C_v ) is heated at constant pressure. The percentage of heat supplied used for external work is 2026A mono-atomic ideal gas, initially at temperature T₁ is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature T₂ by 2026A gas for which is 3/2 is heated at constant pressure. The percentage of heat supplied for external work is nearly 2026One mole of an ideal gas in initial state A undergoes a cyclic process ABCA, as shown in the figure. Its pressure at A is P₀ . Choose the correct option from the following. 2026An ideal mono-atomic gas is heated at constant pressure. The fraction of the total energy applied which increases the internal energy for the gas is 2026 Full Thermodynamics list All MHT CET Medical PYQs