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The half life period of a first order reaction is given by (where, K = rate constant) ?
Related MCQs
The reason why a catalyst increases the rate of reaction is that, it__________?
A catalyst__________?
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For a heterogeneous catalytic reaction__________?
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Sometimes, batch process is preferred over continuous process, when the product__________?
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A batch reactor is__________?
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A backmix reactor__________?
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__________ is the response curve for a step input signal from a reactor ?
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In a chemical reaction, __________ are conserved?
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An autothermal reactor is__________?
Which of the following will favour the reverse reaction in a chemical equilibrium reaction ?
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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 ?
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A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?
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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?
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When all the limiting reactant is consumed in the reaction, the operational yield __________ the relative yield?
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In an ideal tubular-flow reactor__________?
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When a catalyst increases the rate of forward reaction, the value of rate constant__________?
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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?
The effect of increasing pressure on the gaseous equilibrium of the reaction 2X + 3Y ⇌ 3X + 2Y indicates that__________?
Signal normally used to study non-ideal flow by stimulus response technique is __________ input?
A high space velocity means that a given__________?
The half life period of a first order reaction is given by (where, K = rate constant) ?
A. 1.5 K
B. 2.5 K
C. 0.693/K
D. 6.93 K
Correct Answer:
0.693/K
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Last Updated:
February 24, 2019