STANDARDPhysics-Thermodynamics
STANDARD Physics First Law of Thermodynamics MCQ Question
Type: MCQ-numerical-Medium-Class 11
If R is universal gas constant, the amount of needed to raise the temperature of 2 moles of an ideal monatomic gas from 273 K to 373 K when no work is done is
A
100 R
B
150 R
C
300 R
D
500 R
Correct Answer
Option C
Detailed Explanation
As no work is done, ΔW = 0. According to the first law of thermodynamics, ΔQ = ΔU + ΔW = nCᵥΔT = n(R/(γ-1))ΔT. Here, n = 2, γ = 5/3. ΔT = 373 - 273 = 100 K. Therefore, ΔQ = 2 × (R/(5/3 - 1)) × 100 = 300 R.
Found an issue with this question?
Related Questions
More from
Which of the following statements about enthalpy changes in thermodynamics is correct?
(general)Physics
What is the enthalpy change associated with the atomization of dihydrogen (H2)?
(general)Physics
For a strongly endothermic reaction, what is the expected value of the equilibrium constant K?
(general)Physics