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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
None of these
A ferment or an enzyme
Fungi

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Chemical Reaction Engineering
A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be

0.5τ
2τ
0.693τ
τ/0.693

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Chemical Reaction Engineering
If CA is the quantity of reactants initially present, the quantity left after 'n' half periods will be equal to

(1/2)n.CA
(CA)n
(CA)1/2n
(CA)1/n

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Chemical Reaction Engineering
The time needed to achieve the same fractional conversion for particles of different sizes (d) when chemical reaction controls, is proportional to

√d
D2
D
D1.5

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Chemical Reaction Engineering
BET apparatus is used to determine the

Pore diameter
Porosity of the catalyst bed
Pore size distribution
Specific surface of a porous catalyst

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Chemical Reaction Engineering
Considering the endotheomic dissociation of CaCO₃ in a closed vessel (CaCO₃ ⇋ CaO + CO₂), the pressure of CO₂ increases, if

An inert gas is pumped keeping the temperature constant
The temperature is increased
None of these
A catalyst is added

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