Q. 6

Consider the following two statements.

A. If heat is added to a system, its temperature must increase.

B. If positive work in done by a system in a thermodynamic process, its volume must increase.

A. Both A and B are correct

B. A is correct but B is wrong

C. B is correct, but A is wrong

D. Both A and B are wrong

Answer :

Statement A: For an isothermal process (where the temperature remains constant) if heat is added to a system temperature will not increases. So, statement A is wrong.


Statement B: We know that,


Work done = force ×displacement



Volume = area ×displacement


Therefore,


Work done=pressure ×volume


Let change in the volume of system = ΔV = V2-V1


Pressure =P


Thus, work done by the system W at constant pressure


W=PΔV


W>0 and positive only when V2 > V1.


Therefore, statement B is correct.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
JEE Advanced Level Questions of NLM48 mins
Work done in Thermodynamic ProcessFREE Class
Microsporogenesis & Megasporogenesis49 mins
NEET 2021 | Transcription - An important Topic62 mins
Meselson and Stahl experiment49 mins
DNA Fingerprinting42 mins
Interactive Quiz on Molecular basis of Inheritance-02FREE Class
MCQs of Ecology for NEET52 mins
Medelian disorder series: Thalassemia, Sickle cell anaemia & Phenylketonuria60 mins
Different high order thinking questions based on DNA structure39 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses
RELATED QUESTIONS :