Red phosphorous is changed into white phosphorous by________?

The kinetic energy correction factor for velocity distribution of laminar flow is________?

Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the ________ temperature?

Diamagnetic materials are magnetised________?

A ________ evaporator employs an annular downtake?

________ is the hardest material out of the following?