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Chemical Reaction Engineering

Chemical Reaction Engineering
The synthesis of proteins and metabolism in biological objects occur in the presence of biocatalyst called

Haemoglobin
A ferment or an enzyme
Fungi
None of these

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Chemical Reaction Engineering
Which of the following resistances is not involved in a gas phase catalytic (gas- solid) reaction?

Surface phenomenon resistance
Gas film and pore surface diffusion resistances for reactants
Ash resistance
Gas film and pore surface diffusion resistances for products

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Chemical Reaction Engineering
In the hydrodealkylation of toluene to benzene, the following reactions occur:C₇H₈ + H₂ → C₆H₆ + CH₄2C₆H₆ ⇋ C₁₂H₁₀ + H₂Toluene 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

0.16
0.152
0.136
0.144

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Chemical Reaction Engineering
Half life period of decomposition of a liquid 'A' by irreversible first order reaction is 12 minutes. The time required for 75% conversion of 'A' is __________ minutes.

24
18
6
12

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Chemical Reaction Engineering
The vessel dispersion number (D/μL) for plug flow is

∞
750
500

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Chemical Reaction Engineering
Helium-mercury method can be used to determine the __________ of the catalyst particle.

Porosity
Solid density
All of these
Pore volume

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