The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is _____________________ that of mixed reactor?

Byadmin February 22, 2019August 23, 2021

The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is _____________________ that of mixed reactor?

A. Greater than
B. Equal to
C. Smaller than
D. Unpredictable from the data

Chemical Reaction

In Langmuir treatment of adsorption,_________________?

In Langmuir treatment of adsorption,_________________?

A. Whole surface of the catalyst does not have the same activity for adsorption and there is
attraction between the adsorbed molecule
B. Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect
on the rate of adsorption per site
C. All the adsorption does not take place by the same mechanism
D. Extent of adsorption is more than one complete monomolecular layer on the surface

Read More In Langmuir treatment of adsorption,_________________?
Chemical Reaction

Fractional conversion _________________ for an exothermic reversible chemical reaction, when the temperature is maximum?

Fractional conversion _________________ for an exothermic reversible chemical reaction, when the temperature is maximum?

A. Increases
B. Remains unchanged
C. Decreases
D. Unpredictable from the data

Read More Fractional conversion _________________ for an exothermic reversible chemical reaction, when the temperature is maximum?
Chemical Reaction

The effectiveness factor for large value of Thiele modulus [L√(K/D1)] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2/second) ?

The effectiveness factor for large value of Thiele modulus [L√(K/D1)] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2/second) ?

A. L √(K/D1)
B. 1/[L√(K/D1)]
C. 1
D. ∞

Read More The effectiveness factor for large value of Thiele modulus [L√(K/D1)] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2/second) ?
Chemical Reaction

A chemical reaction occurs when the energy of the reacting molecules is __________________ the activation energy of the reaction?

A chemical reaction occurs when the energy of the reacting molecules is __________________ the activation energy of the reaction?

A. Less than
B. Equal to
C. More than
D. Equal to or more than

Read More A chemical reaction occurs when the energy of the reacting molecules is __________________ the activation energy of the reaction?
Chemical Reaction

The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are_______________?

The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are_______________?

A. 2 & 1
B. 11 & 2
C. 2 & 2
D. 1 & 1

Read More The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are_______________?
Chemical Reaction

When the reaction is dominated by intraparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ________________?

When the reaction is dominated by intraparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ________________?

A. nD = (n + 1)/2
B. nD = n/2
C. nD = n + 1
D. None of these

Read More When the reaction is dominated by intraparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ________________?

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