One kilogram of water at room temperature is brought into

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One kilogram of water at room temperature is brought into contact with a high temperature thermal reservoir. The entropy change of the universe is

1. equal to entropy change of the reservoir
2. equal to entropy change of water
3. equal to zero
4. always positive

Correct Option: D

P₂ = 87.4 kPa
P₂ = 87kPa