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Month: February 2019

The irreversible reaction is a special case of reversible reaction, if the________________?

August 23, 2021February 22, 2019 by admin
The irreversible reaction is a special case of reversible reaction, if the________________?

A. Equilibrium constant is 1
B. Conversion of the reactant at equilibrium condition is zero
C. Reactant concentration at equilibrium condition is zero
D. All A., B. and C.

Categories Chemical Reaction

For multiple reactions, the flow pattern within the vessel affects the ____________________?

August 23, 2021February 22, 2019 by admin
For multiple reactions, the flow pattern within the vessel affects the ____________________?

A. Size requirement
B. Distribution of reaction products
C. Both A. and B.
D. Neither A. nor B.

Categories Chemical Reaction

A catalyst is said to be a negative catalyst, if it ___________________?

August 23, 2021February 22, 2019 by admin
A catalyst is said to be a negative catalyst, if it ___________________?

A. Retards the rate of reaction
B. Reduces the value of equilibrium constant
C. Does not initiate the reaction
D. All A., B. and C.

Categories Chemical Reaction

The following half life data are available for the irreversible liquid phase reaction A → products. The overall order of reaction is __________________?

August 23, 2021February 22, 2019 by admin
The following half life data are available for the irreversible liquid phase reaction A → products. The overall order of reaction is __________________?

A. 0.5
B. 1
C. 1.5
D. 2

Categories Chemical Reaction

The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the _______________ energy?

August 23, 2021February 22, 2019 by admin
The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the _______________ energy?

A. Activation
B. Potential
C. Binding
D. Threshold

Categories Chemical Reaction

The response curve for a step input signal from a reactor is called C-curve. The variance of C-curve in a ‘tanks in series model’ comprising of ‘m’ tanks is equal to ___________________?

August 23, 2021February 22, 2019 by admin
The response curve for a step input signal from a reactor is called C-curve. The variance of C-curve in a ‘tanks in series model’ comprising of ‘m’ tanks is equal to ___________________?

A. m
B. 1/m
C. √m
D. m2

Categories Chemical Reaction

If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is _______________?

August 23, 2021February 22, 2019 by admin
If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is _______________?

A. Zero
B. One
C. Two
D. Three

Categories Chemical Reaction

Rate constant ‘k’ and absolute temperature ‘T’ are related by collision theory (for bimolecular) as______________________?

August 23, 2021February 22, 2019 by admin
Rate constant ‘k’ and absolute temperature ‘T’ are related by collision theory (for bimolecular) as______________________?

A. k ∝ T1.5
B. k ∝ exp(-E/RT)
C. k ∝ √T
D. k ∝ T

Categories Chemical Reaction

A back mix reactor is___________________?

August 23, 2021February 22, 2019 by admin
A back mix reactor is___________________?

A. Suitable for gas phase reactions
B. Ideal at very low conversion
C. Same as plug flow reactor (PFR)
D. Same as ideal stirred tank reactor

Categories Chemical Reaction

The increase in the rate of reaction with temperature is due to__________________?

August 23, 2021February 22, 2019 by admin
The increase in the rate of reaction with temperature is due to__________________?

A. Increase in the number of effective collisions
B. Decrease in activation energy
C. Increase in the average kinetic energy of the reacting molecules
D. None of these

Categories Chemical Reaction
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