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NEET UG CHEMISTRY MCQ: THERMODYNAMICS
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The bond energy of is 104.3 kcal . It means : (N=Av.no.)
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Correct option: C
104.3 kcal heat is evolved during combination of 2N atoms of H to from N molecules of Heat of formation of H atom
Option C (104.3 kcal heat is evolved during combination of 2N atoms of H to from N molecules of ) is correct because bond energy is the energy released when a bond is formed.
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Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is