Q. Pick out the wrong statement.

• (A) The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are the same for NSc = NPr= 1
• (B) 1 Nm3 of dry air is lighter than 1Nm3 of humid air
• (C) The Lewis number of a mixture is unity, when the thermal diffusivity is equal to the mass diffusivity
• (D) An Azeotropic mixture of two liquids has boiling point higher than either of them, when it shows negative deviation from Raoult's Law