Chemical Reaction Engineering The vessel dispersion number (D/μL) for plug flow is 750 ∞ 500 750 ∞ 500 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Fluidised bed reactor is characterised by Absence of continuous catalyst regeneration facility Comparatively smaller equipment Very small pressure drop Uniformity of temperature Absence of continuous catalyst regeneration facility Comparatively smaller equipment Very small pressure drop Uniformity of temperature ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following resistances is not involved in a gas phase catalytic (gas- solid) reaction? Surface phenomenon resistance Gas film and pore surface diffusion resistances for products Ash resistance Gas film and pore surface diffusion resistances for reactants Surface phenomenon resistance Gas film and pore surface diffusion resistances for products Ash resistance Gas film and pore surface diffusion resistances for reactants ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the same residence time, which one will give the maximum conversion? Stirred tank followed by tubular flow reactor (each of 2.5 litres) Two stirred tank (each of 2.5 litres) in series Single stirred tank (v = 5 litres) Single tubular flow reactor (v = 5 litres) Stirred tank followed by tubular flow reactor (each of 2.5 litres) Two stirred tank (each of 2.5 litres) in series Single stirred tank (v = 5 litres) Single tubular flow reactor (v = 5 litres) ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A rise in temperature Does not affect a catalysed reaction Does not affect photo-chemical reaction rates Normally tends to increase the reaction rate All of these Does not affect a catalysed reaction Does not affect photo-chemical reaction rates Normally tends to increase the reaction rate All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering 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 2τ 0.693τ 0.5τ τ/0.693 2τ 0.693τ 0.5τ ANSWER DOWNLOAD EXAMIANS APP
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