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
Month: February 2019
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) ___________________?
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
Photo-chemical reactions occur in presence of ___________________?
Photo-chemical reactions occur in presence of ___________________?
A. Sunlight
B. Darkness
C. Solid catalysts
D. Monochromatic radiation only
The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is ?
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 heat of reaction__________________?
The heat of reaction__________________?
A. Depends on the pressure only
B. Depends on the mechanism of reaction only
C. Depends on both pressure and mechanism of reaction
D. Is independent of the mechanism of reaction
Space velocity____________________?
Space velocity____________________?
A. Describes the extensive operating characteristics of a tubular flow reactor
B. Is the maximum feed rate per unit volume of reactor for a given conversion
C. Is a measure of the ease of the reaction
D. All A., B. and C.
A chemical reaction occurs, when the energy of the reacting molecules is ________________ the activation energy of reaction?
A chemical reaction occurs, when the energy of the reacting molecules is ________________ the activation energy of reaction?
A. Less than
B. Equal to
C. More than
D. Equal to or more than
For a _____________ order reaction, the units of rate constant and rate of reaction are the same ?
For a _____________ order reaction, the units of rate constant and rate of reaction are the same ?
A. Zero
B. First
C. Second
D. Fractional
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_____________________?
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
For the same residence time, which one will give the maximum conversion ?
For the same residence time, which one will give the maximum conversion ?
A. Single stirred tank (v = 5 litres)
B. Two stirred tank (each of 2.5 litres) in series
C. Stirred tank followed by tubular flow reactor (each of 2.5 litres)
D. Single tubular flow reactor (v = 5 litres)