Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.)

Chemical Reaction Engineering
Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.)

Reactor dispersion number (D/vL)

None of these

Thiele modulus (L√(k/D1)

Reduced time (vt/V)

Reactor dispersion number (D/vL)

None of these

Thiele modulus (L√(k/D1)

Reduced time (vt/V)

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

Smaller than

Greater than

Unpredictable from the data

Equal to

Smaller than

Greater than

Unpredictable from the data

Equal to

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction?

Zero

1

2

3

Zero

1

2

3

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
Reactions with high activation energy are

Temperature insensitive

Always reversible

Always irreversible

Very temperature sensitive

Temperature insensitive

Always reversible

Always irreversible

Very temperature sensitive

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
A back mix reactor is

Ideal at very low conversion

Suitable for gas phase reactions

Same as ideal stirred tank reactor

Same as plug flow reactor (PFR)

Ideal at very low conversion

Suitable for gas phase reactions

Same as ideal stirred tank reactor

Same as plug flow reactor (PFR)

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
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

∞

> 1

1

∞

> 1

1

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering

Chemical Reaction Engineering Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.)

Chemical Reaction Engineering The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

Chemical Reaction Engineering What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction?

Chemical Reaction Engineering Reactions with high activation energy are

Chemical Reaction Engineering A back mix reactor is

Chemical Reaction Engineering 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

Chemical Reaction Engineering
Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.)

Chemical Reaction Engineering
The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

Chemical Reaction Engineering
What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction?

Chemical Reaction Engineering
Reactions with high activation energy are

Chemical Reaction Engineering
A back mix reactor is

Chemical Reaction Engineering
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