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NEET UG CHEMISTRY MCQ: THERMODYNAMICS
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Which is not a spontaneous process?
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Correct option: C
Heat flowing from colder body to a hotter body
Option C (Heat flowing from colder body to a hotter body) is correct because heat naturally flows from a hotter body to a colder body, not the other way around. This violates the second law of thermodynamics.
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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