Statement I; Both the O-H bond enthalpy values in water molecule are different.Statement II; C=C bond is weaker than C≡C bond.

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Both statements I and II are correct

Statement I is correct and statement II is incorrect

Statement I is incorrect and statement II is correct

Both statements I and II are incorrect

answer is A.

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Detailed Solution

I)H2Og→OHg+Hg; ∆H=+502kJ; OHg→Hg+Og; ∆H=+427kJ; II) As the multiplicity of the bond increases, bond enthalpy increases. Bond length decreases.

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