Back to THERMODYNAMICS
NEET UG CHEMISTRY MCQ: THERMODYNAMICS
1
Easy
1 of 1
Application
+4 | -1
If the internal energy of a system decreases by 125 J and
at the same time it absorbs 54 J of heat then
at the same time it absorbs 54 J of heat then
View answer and explanation
Correct option: A
work is done by the system equal to -179 J
Work is done by the system equal to -179 J because, according to the first law of thermodynamics, , so .
More Questions from THERMODYNAMICS
Practice All Chapter MCQs →
The internal energy of one mole of a gas is:
An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If is the initial temperature and is the final temperature, which of the following statements is correct?
For which of the process, ∆S is negative?
The work done by a weightless piston in causing an expansion ∆V (at constant temperature), when the opposing pressure, P is variable, is given by:
Assertion :- At constant pressure of the change work done is negative.
Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is
Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is