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NEET UG CHEMISTRY MCQ: THERMODYNAMICS
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Two atoms of hydrogen combine to form a molecule of hydrogen gas, the energy of the molecule is :
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Correct option: C
Lower than that of separate atoms
Option C (Lower than that of separate atoms) is correct because bond formation releases energy, resulting in a lower energy state for the molecule.
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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