2HI ⇋ H₂ + I₂
N₂O₂ ⇋ 2NO₂
N₂ + O₂ ⇋ 2NO
None of these
✅ The correct answer is option B.
Chemical Engineering MCQs
The rate constant of a reaction is a function of the
Time of reaction
Temperature of the system
Extent of reaction
Initial concentration of the reactants
✅ The correct answer is option B.
For the reaction, A + B → 2B + C,
rA = rB
rA = -rB
rA = 2rB
rA = rB/2
✅ The correct answer is option B.
If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.
Film
Ash layer
Pore
None of these
✅ The correct answer is option A.
The most suitable reactor for carrying out an auto-thermal reaction is a
Batch reactor
CSTR
Semi-batch reactor
Plug-flow reactor
✅ The correct answer is option B.
The catalytic activity of enzymes is due to their capacity to lower the __________ energy.
Activation
Potential
Kinetic
None of these
✅ The correct answer is option A.
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) increases (ii) decreases
(i) decreases (ii) increases
(i) increases (ii) increases
(i) decreases (ii) decreases
✅ The correct answer is option B.
A stirred tank reactor compared to tubular-flow reactor provides
More uniform operating conditions
Permits operation at the optimum temperature for a long reaction time
Higher overall selectivity for a first order consecutive reaction
All of the above
✅ The correct answer is option D.
In an exothermic chemical reaction, the reactants compared to the products have
Higher temperature
More energy
Less energy
Same energy
✅ The correct answer is option B.