Q.1
Specific rate constant for a second order reaction
Q.2
According to Arhenious equation of temperature dependency of rate constant for an elementary reaction
Q.3
Which of the following factors control the deactivation of a porous catalyst pellet?
Q.4
Velocity of a reaction depends upon the
Q.5
The percent conversion of ethanol in the reactor is
Q.6
Fractional conversion __________ for an exothermic reversible chemical reaction, when the temperature is maximum.
Q.7
reactant and product streams). The amount of heat to be removed is
Q.8
In an exothermic reaction, the energy of the reacting substances as compared to that of products is
Q.9
Which of the following is an independent variable for a batch tank reactor with uniform concentration and temperature?
Q.10
A reaction which is catalysed by a base is catalysed by all substances which have a tendency to
Q.11
The equilibrium constant of a catalytic chemical reaction __________ due to the presence of a catalyst.
Q.12
From Arhenius law, a plot of loge K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is
Q.13
Collision theory gives the rate constant for bimolecular reaction as
Q.14
The vessel dispersion number (D/μL) for plug flow is
Q.15
Inversion of cane sugar is an example of
Q.16
Most important characteristics of gas-liquid reactors are the
Q.17
Rate constant 'k' and absolute temperature 'T' are related by collision theory (for bimolecular) as
Q.18
The ratio of volume of mixed reactor to the volume of P.F.R. (for identical flow rate, feed composition and conversion) for zero order reaction is
Q.19
Reaction rate of a first order reaction, which is half completed in 23 minutes will be
Q.20
The effect of increasing pressure on the gaseous equilibrium of the reaction 2X+3Y ⇋ 3X+2Y indicates that
Q.21
In a/an __________ vessel, the fluid enters and leaves following plug flow.
Q.22
In the fluid catalytic cracker (FCC), the cracking reaction is __________ (i) and the regeneration is ____________ (ii)
Q.23
The enzyme which can catalyse the conversion of glucose to ethyl alcohol is
Q.24
Vegetable oils are hydrogenated in a __________ reactor.
Q.25
For the chemical reaction P → Q, it is found that the rate of reaction doubles as the concentration of 'P' is doubled. If the reaction rate is proportional to Cpn, then what is the value of 'n' for this chemical reaction
Q.26
__________ explains the mechanism of catalysis.
Q.27
Organic catalysts differ from the inorganic catalyst in the sense that the former is
Q.28
For an ideal plug flow reactor, the value of Peclet number is
Q.29
If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship.
Q.30
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for
Q.31
There is no correspondence between stoichiometry and the rate equation in case of a/an __________ reaction.
Q.32
Which of the following is not a unit of reaction rate?
Q.33
If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is
Q.34
If 'n' is the order of reaction, then unit of rate constant is
Q.35
For a mixed flow reactor operating at steady state, the rate of reaction is given by
Q.36
The catalyst in a second order reversible reaction increases the rate of the forward reaction
Q.37
For a zero order reaction, the concentration of product increases with the
Q.38
The conversion for a first order liquid phase reaction. A → B in a CSTR is 50%. If another CSTR of the same volume is connected in series, then the % conversion at the exit of the second reactor will be
Q.39
Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
Q.40
Conversion increases with increase in temperature in case of a an __________ reaction.
Q.41
A stirred tank reactor compared to tubular-flow reactor provides
Q.42
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.
Q.43
The reaction A → B is conducted in an isothermal batch reactor. If the conversion of A increases linearly with holding time, then the order of the reaction is
Q.44
The rate constant of a reaction is a function of the
Q.45
With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will
Q.46
A photochemical reaction is __________ light.
Q.47
The rate constant of a first order reaction depends on the
Q.48
For all positive reaction orders for a particular duty,
Q.49
Half life period of decomposition of a liquid 'A' by irreversible first order reaction is 12 minutes. The time required for 75% conversion of 'A' is __________ minutes.
Q.50
What is the value of 'n' if the reaction rate of the chemical reaction A → B, is proportional to CAn and it is found that the reaction rate triples, when the concentration of 'A' is increased 9 times ?
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