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प्रश्न
Give quantitative definition of entropy. Give its units.
व्याख्या
उत्तर
An entropy change of a system is equal to the amount of heat transferred (Qrev) to it in a reversible manner divided by the temperature in kelvin. `ΔS = Q_(rev)/T`
units of entropy: JK-1
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Spontaneous (Irreversible) Process
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