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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Q. If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.

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Q. The units of frequency factor in Arhenious equation

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Q. Which of the following is not a chemical step in a fluid solid catalytic reaction ?

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Q. The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises form 10 to 100°C.

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Q. A catalyst in a chemical reaction __________ free energy change in the reaction.

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Q. Signal normally used to study non-ideal flow by stimulus response technique is __________ input.

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Q. When all the limiting reactant is consumed in the reaction, the operational yield __________ the relative yield.

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Q. The half life period of a first order reaction is

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Q. The rate constant of a first order reaction depends on the

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Q. A reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.

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