Q. Pick out the wrong statement.

• (A) Bubble size increases with the dynamic viscosity of the liquid in case of nucleate pool boiling
• (B) Thermal conductivity of a dry material is more than that of the damp material
• (C) Ratio of its capacity to economy equals the steam consumption in kg/hr in an evaporator
• (D) Vaporisation of organic substances in evaporator mostly causes foam formation