Q. Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation ?

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Q. The sequence in which three CSTR's of volumes 5, 10 and 15 m³ will be connected in series to obtain the maximum production in a second order irreversible reaction is

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Q. With increase in temperature, the equilibrium conversion of a reversible exothermic reaction

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Q. In a CSTR __________ varies with time.

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Q. The following gas phase reactions are carried out isothermally in a CSTR.

A → 2R ; r₁ = k₁pᴀ ;
k₁ = 20 mole/(sec.m³ bar)
A → 3S ; r₂ = k₂ pᴀ ;
k₂ = 40 mole/(sec.m³ .bar)

What is the maximum possible value of Fʀ(mole/sec.) ?

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Q. As the chemical reaction proceeds, the rate of reaction

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Q. Pick out the wrong statement.

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Q. For identical flow rate and feed composition, X plug flow reactors (PER) in series with a total volume V gives the same conversion as single

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Q. Time required for 50% decomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required for 75% decomposition will be about __________ minutes.

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Q. For a __________ order reaction, the units of rate constant and rate of reaction are the same.

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Q. In case of staged packed bed reactors carrying out exothermic reaction, use

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Q. Vegetable oils are hydrogenated in a __________ reactor.

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Q. 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

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Q. For any reaction, we may write conversion as a function of

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Q. The use of space time is preferred over the mean residence time in the design of a/an

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Q. Autocatalytic reactions are best carried out in a

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Q. The gas phase reaction 2A ↔ B is carried out in an isothermal plug flow reactor. The feed consists of 80 mole % A and 20 mole % inerts. If the conversion of A at the reactor exit is 50%, then Cᴀ/Cᴀ₀ at the outlet of the reactor is

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Q. Non-catalytic fluid-solid reactions are represented by __________ model.

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

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Q. On application of pressure to the equilibrium system, ice ↔ water ; which of the following phenomenon will occur ?

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