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February 2019

The exit age distribution of a fluid leaving a vessel (denoted by E) is used to study the extent of non-ideal flow in the vessel. The value of ∫∞ 0 E.dt is____________________?

Chemical Reaction /
The exit age distribution of a fluid leaving a vessel (denoted by E) is used to study the extent of non-ideal flow in the vessel. The value of ∫∞ 0 E.dt is____________________?

A. 0
B. 1
C. ∞
D. √2π

The exit age distribution of a fluid leaving a vessel (denoted by E) is used to study the extent of non-ideal flow in the vessel. The value of ∫∞ 0 E.dt is____________________? Read More »

Chemical Reaction

Effectiveness factor E. of a catalyst pellet is defined as, E = (actual rate within pore of the catalyst)/(rate if not snowed by pore diffusion), Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus) ___________________?

Chemical Reaction /
Effectiveness factor E. of a catalyst pellet is defined as, E = (actual rate within pore of the catalyst)/(rate if not snowed by pore diffusion), Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus) ___________________?

A. tan hT/T
B. tan T/T
C. tan hT/tan T
D. None of these

Effectiveness factor E. of a catalyst pellet is defined as, E = (actual rate within pore of the catalyst)/(rate if not snowed by pore diffusion), Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus) ___________________? Read More »

Chemical Reaction

The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is ?

Chemical Reaction /
The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is ?

A. 0.875
B. 0.5
C. 0.425
D. Data insufficient to calculate

The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is ? Read More »

Chemical Reaction

The conversion for a first order liquid phase reaction. A → B in a CSTR is 50%. If another CSTR of the same volume is connected in series, then the % conversion at the exit of the second reactor will be_____________________?

Chemical Reaction /
The conversion for a first order liquid phase reaction. A → B in a CSTR is 50%. If another CSTR of the same volume is connected in series, then the % conversion at the exit of the second reactor will be_____________________?

A. 60
B. 75
C. 90
D. 100

The conversion for a first order liquid phase reaction. A → B in a CSTR is 50%. If another CSTR of the same volume is connected in series, then the % conversion at the exit of the second reactor will be_____________________? Read More »

Chemical Reaction