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.Management Sciences
Category: Chemical Engineering Basics
The critical pressure at which the latent heat of vaporization of steam becomes zero is _____________ Kg/cm2 ?
0
A. 273.15
B. 225.65
C. 100.03
D. 373.15
Which of the following gives the correct sequence of flow of the flue gases through the above mentioned boiler accessories ?
A. A, C, B, D
B. D, B, C, A
C. D, C, B, A
D. D, A, B, C
_______________ number determines whether the fluid flow in an open channel is super-critical, critical or sub-critical ?
A. Mach
B. Reynolds
C. Froude
D. Weber
Wrought iron does not have__________________?
A. Uniform strength in all directions
B. Ability to hold protective coating
C. High ductility & corrosion resistance
D. Easily weldable characteristics
Isotropic materials have the same _______________________ in all directions?
A. Induced stresses
B. Density
C. Elastic properties
D. Thermal properties
Spheroidising of a material is a/an ________________ process?
A. Normalising
B. Annealing
C. Tempering
D. Hardening
Main constituent of bone ash is____________________?
A. Ammonium phosphate
B. Calcium phosphate
C. Animal charcoal
D. Ammonium sulphate
Which of the following is resistant to the action of both heat & chemicals ?
A. Borosilicate glass
B. Silica glass
C. Soda lime glass
D. None of these
_________________ is the most suitable lubricant for drawing mild steel wires?
A. Kerosene
B. Water
C. Sodium stearate
D. Lime water
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