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Chemical Reaction Engineering

Chemical Reaction Engineering
The enzyme which can catalyse the conversion of glucose to ethyl alcohol is

Zymase
Invertase
Maltase
Diastase

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Chemical Reaction Engineering
If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship.

T ∝ 1/an - 1
T ∝ an
T ∝ 1/an + 1
T ∝ 1/an

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Chemical Reaction Engineering
In which of the following gaseous phase reversible reactions, the product yield can not be increased by the application of high pressure?

N₂ + O₂ ⇋ 2NO
N + 3H₂ ⇋ 2NH₃
PCl3 + Cl₂ ⇋ PCl5
2SO₂ + O₂ ⇋ 2SO₃

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Chemical Reaction Engineering
For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at

High temperature in a CSTR
High temperature in a PFR
Low temperature in a PFR
Low temperature in a CSTR

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Chemical Reaction Engineering
An isothermal aqueous phase reversible reaction, P ⇋ R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m³ .h is given by, r = 0.5CP - 0.125CR. A stream containing only P enters the

1.60
2.67
1.33
0.80

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Chemical Reaction Engineering
Sulphuric acid is used as a catalyst in the

Alkylation of hydrocarbons
Hydrogenation of oils
None of these
Gas phase oxidation of SO₂ in chamber process

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