Q. Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants ; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is

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Q. Which of the following is an independent variable for a batch tank reactor with uniform concentration and temperature ?

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Q. For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a

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Q. For a gaseous phase reaction, rate of reaction is equal to K. Cᴀ . Cʙ. If the volume of the reactor is suddenly reduced to 1/4th of its initial volume, then the rate of reaction compared to the original rate will be __________ times.

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Q. In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will

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Q. The catalyst in a second order reversible reaction increases the rate of the forward reaction

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Q. Catalyst carriers

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Q. For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1 min⁻¹ . What will be the conversion for a PFR with a space velocity of 0.2 min⁻¹ ? Assume that all the other operating conditions are the same for CSTR and PFR.

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Q. A high space velocity means that a given

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Q. In flow reactors, the performance equations interrelate the rate of reaction to the

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Q. When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is

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Q. In an ideal tubular-flow reactor

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Q. At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R?

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Q. __________ is the controlling step in a highly temperature sensitive fluid-solid non-catalytic reaction.

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Q. An autothermal reactor is

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Q. The equilibrium constant of a catalytic chemical reaction __________ due to the presence of a catalyst.

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Q. The rate constant of a chemical reaction increases by increasing the

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Q. The catalytic activity of enzymes is due to their capacity to lower the __________ energy.

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Q. A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?

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Q. Pick out the correct statement.

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