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NEET UG CHEMISTRY MCQ: THERMODYNAMICS
1
Easy
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Analyzing
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Assertion : Molar enthalpy of vaporisation of water is different from ethanol.
Reason : Water is more polar than ethanol.
Reason : Water is more polar than ethanol.
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Correct option: B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
Option B is correct. Both the assertion and the reason are true, but the reason doesn't fully explain the assertion. The difference in molar enthalpy of vaporization is due to a combination of factors, including hydrogen bonding and other intermolecular forces, not just polarity.
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Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is