Correct answer
A. Type of casing
Explanation
The correct answer is Type of casing.
Heating of ortho-phosphoric acid to 250°C produces________?
Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement. The component of Portland cement which first hardens is________?
For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area________?
Heat exchanger tubes are never made of________?
Unsaturated oils compared to saturated oils have________?
Rate of heat transfer by vaporisation from pools of water is affected by the ________?