Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
BITSAT 2024
Exam
BITSAT
Year
2024
Subject
Chemistry
Chapter
Thermodynamics (C)

BITSAT 2024 · Chemistry · Thermodynamics (C)

What would be the amount of heat absorbed in the cyclic process...

What would be the amount of heat absorbed in the cyclic process shown below? What would be the amount of heat absorbed in the cyclic process shown below?

Options

  1. A5πJ5 \pi \mathrm{ J}
  2. B15πJ15 \pi \mathrm{ J}
  3. C25πJ25 \pi \mathrm{ J}
  4. D100πJ100 \pi \mathrm{ J}

Correct answer

D. 100πJ100 \pi \mathrm{ J}

Step-by-step solution

In a cyclic process, internal energy change =0=0 According to 1st 1^{\text{st }} law of thermodynamics ΔU=Δq+ΔW\Delta U=\Delta q+\Delta W As, ΔU=0,Δq=−ΔW\Delta U=0, \quad \Delta q=-\Delta W From the graph, work done =ΔW==\Delta W= Area under curve Here, area of circle =πr2=\pi r^2=π(25−52)2=π×102∴Δq=100πJ\begin{aligned} & =\pi\left(\frac{25-5}{2}\right)^2=\pi \times 10^2 \\ \therefore \quad \Delta q & =100 \pi \mathrm{ J} \end{aligned}$$
Practice Thermodynamics (C) on Quantrex Academy →

More from Thermodynamics (C)

The bond dissociation energy of X_2, Y_2 and X Y are in the ratio of 1: 0.5: 1. Δ H for… BITSAT 2024Which of the following relation is not correct? BITSAT 2024The standard Gibbs energy (Δ G^0) for the following reaction is aligned & A(s)+B^ 2+ (aq)… BITSAT 2024The combustion of benzene (L) gives CO_2(~g) and H_2 O(L) . Given that heat of combustion… BITSAT 2024Choose the correct option for free expansion of an ideal gas under adiabatic condition… BITSAT 2024Given that bond energies of H-H and Cl-Cl are 430 kJ mol^ -1 and 240 kJ mol^ -1… BITSAT 2023If enthalpies of formation of C_2 H_4( g), CO_2( g) and H_2 O(l) at 25^ ^ ∘ C and 1 atm… BITSAT 2023Standard entropy of X_2, Y_2 and X Y_2 are 60,40 and 50 JK^ -1 mol^ -1 , respectively.… BITSAT 2022 Full Thermodynamics (C) list All BITSAT PYQs