Chemical Reaction Engineering MCQs

In case of calcination of limestone, CaCO₃ CaO + CO₂, the addition of more of CaO will result in __________ in the concentration of CO₂.

In chamber process of sulphuric acid manufacture in industry, the gas phase oxidation of SO₂ to SO₃ is accomplished by a __________ reaction.

Find a mechanism that is consistent with the rate equation and reaction given below:
2A + B → A ₂B, (-r_A) = k.C_A”.C”_B 2A + B → A₂B, (-r_A) = k.C_A.C_B

In which of the following gaseous phase reversible reactions, the product yield can not be increased by the application of high pressure?

Calcination reaction of limestone (CaCO₃ → CaO + CO₂) goes to completion in the rotary kiln, because

The rate expression for a heterogenous catalytic reaction is given by, - r_A = K.K_A P_A(1 + K_A.P_A + K_r.P_R), where K is surface reaction rate constant and K_A and K_R are absorption equilibrium constants of A and R respectively. If K_R P_R >> (1 + K_A P_A), the apparent activation energy E_A is equal to (given E is the activation energy for the reaction and ΔH_R and ΔH_A are the activation energies of adsorption of R and A)

Pick out the wrong statement.

In the hydrodealkylation of toluene to benzene, the following reactions occur:
C₇H₈ + H₂ → C₆H₆ + CH₄
2C₆H₆ ⇋ C₁₂H₁₀ + H₂
Toluene and hydrogen are fed to a reactor in a molar ratio 1 : 5.80% of the toluene gets converted and the selectivity of benzene (defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is

Which of the following chemical reactions will be favoured by low pressure?