7547Chemical EngineeringMedium
The concentration of water vapour in troposphere, which depends upon the altitude & temperature, varies in the range of zero to ________ percent?
A8
B4
C12
D1
Correct answer
B. 4
Explanation
The correct answer is 4.
Correct answer
B. 4
Explanation
The correct answer is 4.
Weight of 1 m3 of humid air as compared to 1 m3 of dry air, under the same conditions, is________?
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 ________?
To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in________?
In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when________?
Choose the correct equation?
Which of the following is an undesirable characteristic of a refrigerant?