The preferred reacting system for oxidation of o-xylene to phthalic anhydride is _____________________?

Byadmin February 20, 2019August 23, 2021

The preferred reacting system for oxidation of o-xylene to phthalic anhydride is _____________________?

A. Jacketed liquid phase CSTR
B. Jacketed steam heated multitubular reactor
C. Multitubular reactor with cooling
D. Multistage multitubular reactor with interstage cooling

Chemical Reaction

A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be ____________________ minutes?

A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be ____________________ minutes?

A. 4
B. 8
C. 12
D. 16

Read More A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be ____________________ minutes?
Chemical Reaction

With increase in K2/K1 in case of a unimolecular type elementary reactions as shown in the bellow figure, the fractional yield of ‘R’ in mixed reactor (for a given conversion of ‘A’) ?

With increase in K2/K1 in case of a unimolecular type elementary reactions as shown in the bellow figure, the fractional yield of ‘R’ in mixed reactor (for a given conversion of ‘A’) ?

A. Decreases
B. Increases
C. Increases linearly
D. Remain same

Read More With increase in K2/K1 in case of a unimolecular type elementary reactions as shown in the bellow figure, the fractional yield of ‘R’ in mixed reactor (for a given conversion of ‘A’) ?
Chemical Reaction

BET apparatus_______________________?

BET apparatus_______________________?

A. Measures the catalyst surface area directly
B. Operates at very high pressure
C. Is made entirely of stainless steel
D. None of these

Read More BET apparatus_______________________?
Chemical Reaction

Maximum equilibrium conversion for endothermic reaction is obtained at the ______________ temperature?

Maximum equilibrium conversion for endothermic reaction is obtained at the ______________ temperature?

A. Highest possible
B. Lowest possible
C. Intermediate
D. Room

Read More Maximum equilibrium conversion for endothermic reaction is obtained at the ______________ temperature?
Chemical Reaction

For the non catalytic reaction of particles with surrounding fluid, the same needed to achieve the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the ________________ is the controlling resistance?

For the non catalytic reaction of particles with surrounding fluid, the same needed to achieve the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the ________________ is the controlling resistance?

A. Film diffusion
B. Diffusion through ash layer
C. Chemical reaction
D. Either A., B. or C.

Read More For the non catalytic reaction of particles with surrounding fluid, the same needed to achieve the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the ________________ is the controlling resistance?
Chemical Reaction

A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant) ?

A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant) ?

A. ∝ CA
B. ∝ 1/CA
C. Independent of temperature
D. None of these

Read More A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant) ?

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