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February 2019

If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst___________________?

Chemical Reaction /
If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst___________________?

A. Porosity is very important
B. Porosity is of less importance
C. Internal surface area is utilised efficiently
D. None of these

If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst___________________? Read More »

Chemical Reaction

With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be__________________?

Chemical Reaction /
With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be__________________?

A. Higher in P.F. reactor
B. Higher in CSTR
C. Same in both the reactors
D. Data insufficient; can’t be predicted

With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be__________________? Read More »

Chemical Reaction

The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the_________________?

Chemical Reaction /
The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the_________________?

A. Increased temperature reduces the activation energy
B. Fraction of molecules having threshold energy increases
C. Collision frequency increases
D. Value of threshold energy decreases

The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the_________________? Read More »

Chemical Reaction

In the hydrodealkylation of toluene to benzene, the following reactions occur: C7H8 + H2 → C6H6 + CH4 2C6H6 ⇌ C12H10 + H2 Toluene and hydrogen are fed to a reactor in a molar ratio 1:5.80% of the toluene gets converted and the selectivity of benzene(defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is_______________________?

Chemical Reaction /
In the hydrodealkylation of toluene to benzene, the following reactions occur: C7H8 + H2 → C6H6 + CH4 2C6H6 ⇌ C12H10 + H2 Toluene and hydrogen are fed to a reactor in a molar ratio 1:5.80% of the toluene gets converted and the selectivity of benzene(defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is_______________________?

A. 0.16
B. 0.144
C. 0.152
D. 0.136

In the hydrodealkylation of toluene to benzene, the following reactions occur: C7H8 + H2 → C6H6 + CH4 2C6H6 ⇌ C12H10 + H2 Toluene and hydrogen are fed to a reactor in a molar ratio 1:5.80% of the toluene gets converted and the selectivity of benzene(defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is_______________________? Read More »

Chemical Reaction