For a tubular reactor with space time 'τ' and residence time 'θ', the following statement holds good. τ = θ , for a non-isothermal reactor τ = θ , for an isothermic tubular reactor in which the density of the process fluid is constant τ = θ , when the fluid density changes in the reactor τ and θ are always equal TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor? Very low temperature should be used throughout the reaction Very high temperature should be used throughout the reaction Temperature should be high in the beginning and decreased towards the end of the reaction None of these TRUE ANSWER : ? YOUR ANSWER : ?
For an ideal plug flow reactor, the value of Peclet number is 0 ∞ 1 10 TRUE ANSWER : ? YOUR ANSWER : ?
__________ is the response curve for a step input signal from a reactor. I-curve S-curve None of these C-curve TRUE ANSWER : ? YOUR ANSWER : ?
A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are Of such size that the ratio of their volumes is < 5 None of these Of different sizes Equal in size TRUE ANSWER : ? YOUR ANSWER : ?
Rate of an autocatalytic chemical reaction is a function of Pressure only All of these Composition only Temperature only TRUE ANSWER : ? YOUR ANSWER : ?
An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will Depend on the temperature Be more in CSTR than in PFR Be more in PFR than in CSTR Be same in both cases TRUE ANSWER : ? YOUR ANSWER : ?
Calcination reaction of limestone (CaCO₃ → CaO + CO₂) goes to completion in the rotary kiln, because Of high calcination temperature CO₂ escapes continuously CaO is more stable than CaCO₃ CaO is not dissociated TRUE ANSWER : ? YOUR ANSWER : ?
Chemical reaction rate of a component depends upon the Temperature of the system All of these Pressure of the system Composition of the component only TRUE ANSWER : ? YOUR ANSWER : ?
__________ gas is normally employed in B.E.T.method of finding out the surface area of catalyst. CO₂ He N₂ H₂ TRUE ANSWER : ? YOUR ANSWER : ?