Chemical Reaction Engineering
In the converter of the contact process for the manufacture of H₂SO₄ the equilibrium conversion of SO₂ __________ (i) __________ with increase in temperature and __________ (ii) __________ with increase in the mole ratio of SO₂ to air.

(i) decreases (ii) increases
(i) decreases (ii) decreases
(i) increases (ii) increases
(i) increases (ii) decreases

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Chemical Reaction Engineering
The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.

Surface reaction between A in the gas phase and absorbed B
Surface reaction between absorbed A and absorbed B
Absorption of A
Surface reaction between absorbed A and B in the gas phase

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