Pick out the wrong statement?

When the liquid phase and vapour phase of a binary system obeys Raoult’s and Dalton’s law respectively, the relative volatility is the ratio of________?

Cold crushing strength of fireclay bricks is about ________ kgf/cm2?

The maximum linear expansion of silica bricks during firing is about ________ percent?

Transistor parts and refrigerator components are normally made of________?

When a system is in equilibrium for all possible processes, the differential or finite change of entropy is________?