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This quiz contains multiple-choice problems on mole balances, reactions rates and classification.
Which of the following statements is true about a catalyst?
The chemical reaction rate is a/an
Extensive property
Intensive property
Chemical property
Physical property
The general mole balance equation of species ‘i’ at any instant is as follows
Rate of moles of ‘i’ in = Rate of moles of ‘i’ out
Rate of moles of ‘i’ in + Rate of moles of ‘i’ out = Rate of moles of ‘i’ accumulated
Rate of moles of ‘i’ in + Rate of moles of ‘i’ accumulated = Rate of moles ‘i’ out
Rate of moles of ‘i’ in – Rate of moles of ‘i’ consumed by reaction – Rate of moles of ‘i’ out = Rate of moles of ‘i’ accumulated
In __, there are no spatial variations in concentration and temperature.
PFR
Tubular reactor
CSTR
Packed bed reactor
The kinetic rate law is a/an
Differential equation
Linear equation
Algebraic equation
Quadratic equation
The extent of a reaction achieved does not depend on the shape of the reactor in a PFR. True or false?
True
False
The unit for rate of reaction for a homogeneous reaction is
mol/s. g catalyst
mol/s. mmHg
mol/s. m^3
mol/s. m^2
The rate of gaseous phase reactions depends on
Temperature of reactants only
Pressure of reactants only
Concentration of reactants only
Temperature, pressure and concentration of reactants
A bimolecular reaction is the one in which
One reactant molecule is transformed to product
Two product molecules are formed
Two reactant molecules produce product(s)
No reaction occurs
An example of termolecular reactions is
The decomposition of cyclobutane
The decomposition of hydrogen Iodide
The decomposition of ammonia
The oxidation of nitric oxide
Which of the following represents heterogeneous catalytic reactions?
Burning of coal
Roasting of ores
Ammonia synthesis
Reduction of iron ore
The mole balance equation for a perfectly mixed batch reactor is
dN{i}/dt = 0
dN{i}/dt = r{i}.V
dN{i}/dt = ∫r{i}.dV
dN{i}/dt = r{i}
The unit for rate of reaction for a fluid-solid catalytic reaction is
mol/m^3. s
mol/s. g catalyst
mol/s. mmHg
mol/dm^3. s
–r{A} is a universal notation for reaction rate. What does the negative sign indicate?
Rate of formation of A
Rate of disappearance of A
Rate of dissociation of A
Rate of association of A
The formation of HBr proceeds by
Free radical, non-chain reaction mechanism
Free radical, chain reaction mechanism
Molecular intermediates, non-chain reaction mechanism
Transition complexes, non-chain reaction mechanism
