Mass Transfer - Engineering

Q1:

Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

A p = P

B p >>P

C p < P

D p << P

ANS:A - p = P

Condensation of a vapor-gas mixture just begins when the partial pressure of the vapor (𝑝)(p) equals the vapor pressure of the liquid (𝑃)(P). So, the correct statement is: 𝑝=𝑃