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For phase transformation of liquid water at 1 atm, 373 K to water vapour at 1 atm, 373 K, $∆G$ will be zero.

Two solid blocks of same material and same mass having different temperature are kept in an isolated system then entropy of system must increase.

Intensive properties are not additive in nature while extensive properties are additive in nature

No cyclic process is possible in which the sole  result is absorption of heat from a hot reservoir and its complete conversion into work