Chemical Reaction Engineering A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by keff = (kkg)1/2 keff = (k+ kg)/2 1/keff = 1/k + 1/kg keff = k + kg keff = (kkg)1/2 keff = (k+ kg)/2 1/keff = 1/k + 1/kg keff = k + kg ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a chemical reaction, __________ are conserved. Atoms Masses Ions Both B & C Atoms Masses Ions Both B & C 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 0.5τ 0.693τ τ/0.693 2τ 0.5τ 0.693τ τ/0.693 2τ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For series reaction, the relative yield Is always greater for plug-flow reactor than for the single CSTR of the same volume Statement in A is wrong Decreases with increasing conversion Both A and C hold good Is always greater for plug-flow reactor than for the single CSTR of the same volume Statement in A is wrong Decreases with increasing conversion Both A and C hold good ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering 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 Increases Remains unaltered Changes unpredictably Decreases Increases Remains unaltered Changes unpredictably ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering According to Arhenious equation of temperature dependency of rate constant for an elementary reaction K ∝ e-E/RT K ∝ √T K ∝ T e-E/RT None of these K ∝ e-E/RT K ∝ √T K ∝ T e-E/RT None of these ANSWER DOWNLOAD EXAMIANS APP
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