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Chemical Engineering Basics - Engineering

Q1:

The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2 .

A 273.15

B 225.65

C 100.03

D 373.15

ANS:B - 225.65

The critical pressure at which the latent heat of vaporization of steam becomes zero is 225.65 kg/cm². This pressure corresponds to the critical point of water, which occurs at a temperature of 374.15°C (or 647.3 K) and a pressure of 22.065 MPa (or 220.65 bar, which is equivalent to 225.65 kg/cm²).