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 %
A.1.8 to 9.5 %
B.4.1 to74.2 %
C.3.2 to 12.5 %
D.1.6 to 8.5 %
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
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
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.Stanton number
B.Mach number
C.Graetz number
D.Grashoff number
E.Weber number
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
A.Nature of body
B.Temperature of body
C.Physical nature
D.All of the above
E.None of the above
A.continuous combustion
B.a momentary flash
C.no combustion
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
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