Second Law of Thermodynamics

1. Which of the following is correct expression of the first law of thermodynamics?a) q= ∆ H - Wb) ∆ H=q+Wc) ∆ U= q+ Wd) ∆ U= ∆ H +P ∆ V 2.The first law of thermodynamics fails to decide________...

1. Which of the following is correct expression of the first law of thermodynamics?

a) q=H - W

b)H=q+W

7 .Which of the following is the largest unit of energy?electron voltjoulecalorieerg8. A perfect black body has a unique characteristic feature asa good absorber onlya good radiatora good absorber ...

7: Calorie is the largest unit of energy, among the given.

8: A perfect black body has a unique characteristic feature as a good absorber and a good radiator.

9: A thermodynamic process where no heat is exchanged with the surroundings is adiabatic.

10: Nernst formulated the Third law of thermodynamics.

11: The irreversibility of a process occurs due to either a) lack of equilibrium during the process or b) involvement of dissipative effects or both.

12: Efficiency of heat engine cycle is the ratio...

Q1. A measure of the degree of disorder of a system is known as Enthalpy Isobaric Isotropy EntropyQ2. If ΔThe efficiency of Carnot engine operating with reservior temperature at 100 K and –23 K wil...

1: A measure of the degree of disorder of a system is known asenthalpy.

2:If ΔThe efficiency of Carnot engine operating with reservior temperature at 100 K and –23 K will be(100+23)/100.

3:Coefficient of performance of an ideal refrigerator working between temperature T1 and T2 (T1 > T2) isBeta = T2 / (T1 - T2).

4:Entropy of a thermodynamic system does not change when this system is used for conduction of heat from a hot reservoir to a cold reservoir.

5:The second law of thermodynamics states...

Chemical Thermodynamics

Introduction There are so many natural phenomena which occur along a particular direction. To answer the feasibility of a process along a particular direction, second law of thermodynamics is requi...

NEB Grade 12 Physics model question with solution

Grade 12 Physics model Question and its Solution (New Syllabus)Group A: Multiple Choice Questions (11 × 1 =11)1. Which of the following is a correct formula for calculating the radius of gyration ...