Which of the following is the most widely used heat insulating material for pipelines carrying steam
Tar dolomite bricks followed by asbestos.
Cotton followed by aluminium foil.
85% magnesia cement and glass wool.
A Foxoyo User
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
Phosphoric acid is produced in wet process from phosphate rock and
The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm mole, its fugacity at 300 K would be