A. (CA/2)n
B. (½)n CA
C. (CA/2)1/n
D. (CA)1/2n
Correct Answer: (½)n CA ✔
Last Updated: February 24, 2019
Related MCQs
- In an exothermic chemical reaction, the reactants compared to the products have__________?
- BET apparatus__________?
- The half life period of a first order reaction is given by (where, K = rate constant) ?
- The reason why a catalyst increases the rate of reaction is that, it__________?
- A catalyst__________?
- The rate controlling step for the heterogeneous irreversible catalytic reaction A(g) + B(g) → C(g) is the surface reaction of absorbed A with absorbed B to give adsorbed C. The rate expression for this reaction can then be written as (where, KA, KB and KC are the equilibrium constants and is the rate constant of the rate controlling step) ?
- Reaction rate equation for the bellow figure reaction, If S at is present in large excess, what is the order of this reaction ?
- In the gaseous phase ammonia formation reaction (N2 + 3H2 ⇌ 2NH3), the value of the equilibrium constant depends on the__________?
- For a heterogeneous catalytic reaction__________?
- For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is__________?
- A photochemical reaction is __________?
- For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor?
- Sometimes, batch process is preferred over continuous process, when the product__________?
- A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length ?
- A batch reactor is__________?
- Radioactive decay follows __________ order kinetics?
- The single parameter model proposed for describing non-ideal flow is the __________ model?
- Photochemical reaction rate does not depend significantly on temperature, because__________?
- A batch reactor is suitable for__________?
- A backmix reactor__________?
- For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption?
- In the reversible reaction of the type, A + B ⇌ AB, in general__________?
- In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg mole?
- Which of the following is a controlling factor in very fast heterogeneous reaction ?
- For a zero order chemical reaction, the__________?
- An imbalanced chemical reaction equation is against the law of__________?
- __________ is the response curve for a step input signal from a reactor ?
- ‘N’ plug flow reactors in series with a total volume ‘V’ gives the same conversion as a single plug flow reactor of volume ‘V’ for __________ order reactions?
- Enzymes are destroyed, when the__________?
- Ionic reactions occur in__________?
- With decrease in temperature, the equilibrium conversion of a reversible endothermic reaction__________?
- In a chemical reaction, __________ are conserved?
- Sulphuric acid is used as a catalyst in the__________?
- An autothermal reactor is__________?
- Which of the following will favour the reverse reaction in a chemical equilibrium reaction ?
- For a vapour phase catalytic reaction (A + B → P) which follows the Ridel mechanism and the reaction step is rate controlling, the rate of reaction is given by (reaction rate is irreversible, product also absorbs) ?
- At a given temperature, K1, K2 and K3 are equilibrium constants for the following reactions 1, 2, 3 respectively. CH4(g) + H2O(g) ⇌ CO(g) + 3H2(g), CO(g) + H2O(g) ⇌ CO2(g) + H2(g) CH4(g) + 2H2O(g) ⇌ CO2(g) + 4H2(g) Then K1, K2 and K3 are related as ?
- 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__________?
- A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?
- 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 from 10 to 100°C?
- 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 0.1min-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 ?
- When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is__________?
- A reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction?
- Which of the following is an independent variable for a batch tank reactor with uniform concentration and temperature ?
- When all the limiting reactant is consumed in the reaction, the operational yield __________ the relative yield?
- In flow reactors, the performance equations interrelate the rate of reaction to the__________?
- In an ideal tubular-flow reactor__________?
- In a/an __________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation?
- When a catalyst increases the rate of forward reaction, the value of rate constant__________?
- For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a __________ reactor?
- For a gaseous phase reaction, rate of reaction is equal to K. CA . CB. 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?