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Chemical Reaction Engineering

Chemical Reaction Engineering
In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole.

100000
10000
100
1000

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Chemical Reaction Engineering
A first order reaction requires two equal sized CSTR. The conversion is

More when they are connected in parallel
More when they are connected in series
Less when they are connected in series
Same whether they are connected in series or in parallel

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Chemical Reaction Engineering
For identical flow rate and feed composition, X plug flow reactors (PER) in series with a total volume V gives the same conversion as single

CSTR of volume V/X
PFR of volume V/X
PFR of volume V
CSTR of volume V

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Chemical Reaction Engineering
For identical flow rate, feed composition and for elementary first order reactions, 'N' equal sized mixed reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for constant density systems. This is true, when the value of 'N' is

1
∞
≥1
>1

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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
Equal to
Unpredictable from the data
Greater than

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Chemical Reaction Engineering
A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be

2τ
0.693τ
τ/0.693
0.5τ

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