In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants) A A+N N A-N TRUE ANSWER : ? YOUR ANSWER : ?
Transition state theory relates the above quantities as K ∝ T.eE/RT K ∝ e-E/RT K ∝ √T K ∝ T1.5 TRUE ANSWER : ? YOUR ANSWER : ?
Sum of the powers of the concentration terms in the rate equation is called the __________ of the reaction. Molecularity Overall order None of these Order TRUE ANSWER : ? YOUR ANSWER : ?
A Catalyst Increases the equilibrium concentration of the product None of these Shortens the time to reach the equilibrium Changes the equilibrium constant of the reaction TRUE ANSWER : ? YOUR ANSWER : ?
Promoter is added to the catalyst to improve its Porosity None of these Sensitivity Surface area TRUE ANSWER : ? YOUR ANSWER : ?
A photochemical reaction is __________ light. Accompanied with emission of Initiated by Used to convert heat energy into Catalysed by TRUE ANSWER : ? YOUR ANSWER : ?
If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle) Decreases Changes unpredictably Remains unaltered Increases TRUE ANSWER : ? YOUR ANSWER : ?
A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be τ/0.693 0.5τ 2τ 0.693τ TRUE ANSWER : ? YOUR ANSWER : ?
For any reaction, we may write conversion as a function of Time Temperature Concentration All of these TRUE ANSWER : ? YOUR ANSWER : ?
Rate determining step in a reaction consisting of a number of steps in series is the __________ step. Slowest Data insufficient; can't be predicted Fastest Intermediate TRUE ANSWER : ? YOUR ANSWER : ?