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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Q. Participation of __________ is involved in the occurrence of a chemical reaction.

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Q. Promoter.

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Q. Pure A in gas phase enters a reactor 50% of this A is converted to B through the reaction, A → 3B. Mole fraction of A in the exit stream is

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Q. The rate of reaction does not decrease appreciably as the reaction proceeds in case of __________ reactions.

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Q. For all positive reaction orders for a particular duty,

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Q. The heat of reaction

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Q. Which of the following does not produce a change in the value of rate constant of a reaction ?

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Q. For the same residence time, which one will give the maximum conversion ?

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Q. __________ gas is normally employed in B.E.T.method of finding out the surface area of catalyst.

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Q. The rate constant of a reaction depends on the

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Q. For the reversible reaction A ↔ 2B, if the equilibrium constant K is 0.05 mole/litre; starting from initially 2 moles of A and zero moles of B, how many moles will be formed at equilibrium ?

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Q. A batch reactor suffers from following disadvantage.

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Q. A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are

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Q. Half life period of a chemical reaction is proportional to Cᴀ₀⁻¹ , if the reaction is of __________ order.

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Q. The irreversible reaction, X → Y, is the special case of the reversible reaction, X ↔ Y, in which the

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Q. In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be __________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume.

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Q. Photo-chemical reactions occur in presence of

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