A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is ______________ seconds?
A. 1
B. 3
C. 1/3
D. 32
Month: February 2019
With increase in initial concentration, the fractional conversion of a first order reaction in a given time___________________?
With increase in initial concentration, the fractional conversion of a first order reaction in a given time___________________?
A. Increases
B. Decreases
C. Remain constant
D. Unpredictable
The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are_______________?
The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are_______________?
A. 2 & 1
B. 11 & 2
C. 2 & 2
D. 1 & 1
Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature ?
Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature ?
A. Pore diffusion
B. Film diffusion
C. Ash layer diffusion
D. Chemical reaction
Which of the following team lead as Captain by Shoaib Malik in PSL-4?
Which of the following team lead as Captain by Shoaib Malik in PSL-4?
A. Islamabad United
B. Peshawar zalmi
C. Multan sultan
D. Quetta gladiators
The temperature dependence of reaction rate constant (K) by Arrhenius law is given by_______________?
The temperature dependence of reaction rate constant (K) by Arrhenius law is given by_______________?
A. K α e-E/RT
B. K α eE/RT
C. K α T . e-E/RT
D. K α √T . e-E/RT
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for________________?
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for________________?
A. Fast reactions in catalyst of small pore diameter
B. Fast reaction in catalyst of large pore diameter
C. Slow reactions in catalyst of small pore diameter
D. Slow reactions in catalyst of large pore diameter
Half-life period for a first order reaction is _____________ the initial concentration of the reactant?
Half-life period for a first order reaction is _____________ the initial concentration of the reactant?
A. Directly proportional to
B. Inversely proportional to
C. Independent of
D. None of these
Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in ______________ in conversion?
Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in ______________ in conversion?
A. Decrease
B. Increase
C. No change
D. Either A. or B., depends on the type of reaction
In case of a _____________ reactor, the composition in the reactor and at the exit of the reactor is the same ?
In case of a _____________ reactor, the composition in the reactor and at the exit of the reactor is the same ?
A. Semi-batch
B. Tubular
C. Batch
D. Back-mix