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Chemical Reaction Engineering

Chemical Reaction Engineering
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

100
90
60
75

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Chemical Reaction Engineering
For series reaction, the relative yield

Decreases with increasing conversion
Is always greater for plug-flow reactor than for the single CSTR of the same volume
Both A and C hold good
Statement in A is wrong

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Chemical Reaction Engineering
In chamber process of sulphuric acid manufacture in industry, the gas phase oxidation of SO₂ to SO₃ is accomplished by a __________ reaction.

Catalytic heterogeneous
Non-catalytic heterogeneous
Non-catalytic homogeneous
Catalytic homogenous

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Chemical Reaction Engineering
With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be

Higher in P.F. reactor
Same in both the reactors
Data insufficient; can't be predicted
Higher in CSTR

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Chemical Reaction Engineering
Sometimes, batch process is preferred over continuous process, when the product

Quality & yield can not be achieved in continuous processes, because of long residence time
Neither A nor B
Sales demand is fluctuating
Both A & B

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

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