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February 2019

6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO2 and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant ?

Chemical Reaction /
6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO2 and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant ?

A. 100%
B. 95%
C. 75%
D. 20%

6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO2 and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant ? Read More »

Chemical Reaction

A first order reaction requires two equal sized CSTR. The conversion is____________________?

Chemical Reaction /
A first order reaction requires two equal sized CSTR. The conversion is____________________?

A. Less when they are connected in series
B. More when they are connected in series
C. More when they are connected in parallel
D. Same whether they are connected in series or in parallel

A first order reaction requires two equal sized CSTR. The conversion is____________________? Read More »

Chemical Reaction

The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the_________________?

Chemical Reaction /
The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the_________________?

A. Space time for each parallel line is same
B. Space time for parallel lines is different
C. Larger reactors have more space time compared to smaller ones
D. None of these

The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the_________________? Read More »

Chemical Reaction

What is the order of a chemical reaction of the bellow figure, if the rate of formation of ‘C’, increases by a factor of 2.82 on doubling the concentration of ‘A’ and increases by a factor of 9 on trebling the concentration of ‘B’ ?

Chemical Reaction /
What is the order of a chemical reaction of the bellow figure, if the rate of formation of ‘C’, increases by a factor of 2.82 on doubling the concentration of ‘A’ and increases by a factor of 9 on trebling the concentration of ‘B’ ?

A. 7/2
B. 7/4
C. 5/2
D. 5/4

What is the order of a chemical reaction of the bellow figure, if the rate of formation of ‘C’, increases by a factor of 2.82 on doubling the concentration of ‘A’ and increases by a factor of 9 on trebling the concentration of ‘B’ ? Read More »

Chemical Reaction

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

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

A. 2η
B. 0.5η
C. η/0.693
D. 0.693η

A pulse tracer is introduced in an ideal CSTR (with a mean residence time I) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be__________________? Read More »

Chemical Reaction

A typical example of an exothermic reversible reaction conducted at high pressure in industry is____________________?

Chemical Reaction /
A typical example of an exothermic reversible reaction conducted at high pressure in industry is____________________?

A. Dehydration of ethanol
B. Methanol synthesis
C. Reformation of methane
D. Polymerisation of ethylene

A typical example of an exothermic reversible reaction conducted at high pressure in industry is____________________? Read More »

Chemical Reaction