JEE Main 21 Jan 2026 Shift 2 Paper Solved Paper

Section: Chemistry

Question : 61 of 75

Marks: +1, -0

Consider the following data :
∆fH∘(‌ methane, ‌g)=−XkJmol−1 Entalpy of sublimation of graphite =YkJmol−1 Dissociation enthalpy of H2=ZkJmol−1 The bond enthalpy of C−H bond is given by :

[21 Jan 2026 Shift 2]

‌
X+Y+2Z
4
‌
X+Y+4Z
2
‌
−X+Y+Z
4
X+Y+Z

Validate

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