1224. In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be September 6, 2025 by Admin A. ΔQ = 0, ΔS=0 B. ΔQ = 0 , ΔS = +ve C. ΔQ = 0, ΔS = -ve D. ΔQ = +ve , ΔS= +ve ✅ The correct answer is option B.