What is the explosive range for ethane?
A.1.8 to 9.5 %
B.4.1 to74.2 %
C.3.2 to 12.5 %
D.1.6 to 8.5 %
Category: Chemical Engineering Mcqs
Solvay process for the manufacture of soda ash
A.can use low-grade brine
B.requires less electric power than the modified Solvay process
C.does not require NH3 plant investment
D.all of the above
Which of the following is / are thermometric property (ies)?
A.Pressure of a gas kept at constant-volume
B.Volume of a gas kept at constant-pressure
C.Thermal emf of a thermocouple
D.All of the above
With no excess air flue gas from the complete and perfect combusion of methane world contain
A.11.7% N2 and 88.3% CO2 by volume
B.11.7% CO2 and 88.3% N2 by volume
C.24.8% CO2 and 75.2% N2 by volume
D.24.8% N2 and 75.2% CO2 by volume
A non-dimensional number which generally finds application in mass transfer problems is
A.Stanton number
B.Mach number
C.Graetz number
D.Grashoff number
E.Weber number
The numerical value of gc. Newtons law proportionality factor is
A.32.174 lbm.ft/lbf.s2
B.9.806 kg.m/kgf.s2
C.1 kg.m/N.s2
D.any of these answers
The emissive power of a body depends on
A.Nature of body
B.Temperature of body
C.Physical nature
D.All of the above
E.None of the above
Ignition of liquid fuel at its fire point would cause
A.continuous combustion
B.a momentary flash
C.no combustion
Zeolite catalyst
A.are crystalline alumino-silicates
B.have high activity than synthetic amorphous catalyst
C.are used in catalytic cracking of heavy vacuum gas oils
D.all of the above
Which of the following is a catalytic reaction?
A.Synthesis of water by passing electric sparks through a mixture of hydrogen and oxygen
B.Neutralization of a dilute alkali solution by a small amount of a conentrated acid
C.Hydrolysis of an ester in the presence of H+
D.Darkening of silver halides in light
