Correct answer
A. Aluminium or chromium alloys (Cr > 18% for cold acid)
Explanation
The correct answer is Aluminium or chromium alloys (Cr > 18% for cold acid).
In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when________?
Which one is different for the neutral atoms of the isotopes of an element?
A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is ________?
Dislocation cross-slip is difficult in those materials, which have________?
Nitrogen in coal________?
In a shell and tube heat exchanger, the shell side fluid velocity can‟t be changed by changing the________?