Dryness fraction of dry steam is________?

Presence of MgO in alumino-silicate refractories ________ its refractoriness?

In an irreversible process________?

The vapour pressure of a solution (made by dissolving a solute in a solvent) is ________ that of the pure solvent?

Moisture can be removed from lubricating oil using________?

The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is________?