Question

Catalyst is a substance, which __________ chemical reaction.

a.

increases the speed of a

b.

decreases the speed of a

c.

can either increase or decrease the speed of a

d.

alters the value of equilibrium constant in a reversible

Answer: (c).can either increase or decrease the speed of a

Interact with the Community - Share Your Thoughts

Uncertain About the Answer? Seek Clarification Here.

Understand the Explanation? Include it Here.

Q. Catalyst is a substance, which __________ chemical reaction.

Similar Questions

Explore Relevant Multiple Choice Questions (MCQs)

Q. A rise in temperature

Q. The enzyme which can catalyse the conversion of glucose to ethyl alcohol is

Q. 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

Q. What is the dispersion number for a CSTR?

Q. Rate of a chemical reaction is independent of the concentration of the reactants for a __________ reaction.

Q. With increase in temperature, the rate constant obeying Arhenious equation

Q. Bulk diffusion in catalyst pore __________ with increase in pressure.

Q. Pick out the correct statement.

Q. The concentration of A in a first order reaction, A → B, decreases

Q. The equilibrium constant of chemical reaction __________ in the presence of catalyst.

Q. The order of a chemical reaction is

Q. A chemical reaction occurs, when the energy of the reacting molecules is __________ the activation energy of reaction.

Q. B.E.T. method of finding out surface area of a catalyst, uses the extension of __________ isotherm.

Q. In a chemical reaction, repesented by, A → B , it is observed that the

(i) rate of reaction increases by a factor of 4 on doubling the concentration of the reactant.
(ii) rate of reaction increases by a factor of 9 on trebling the concentration of the reactant.

Then the rate of the reaction is proportional to(where, Cᴀ = contentration of the reactant)

Q. An example of autothermal reactor operation is

Q. For a packed bed reactor; the presence of a long tail in the residence time distribution curve is an indication of

Q. For reaction, P + 2 → 3R, molar rate of consumption of P is

Q. If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst

Q. The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is

Q. What is the value of 'n' if the reaction rate of the chemical reaction A → B, is proportional to Cᴀⁿ and it is found that the reaction rate triples, when the concentration of 'A' is increased 9 times ?

Recommended Subjects

Are you eager to expand your knowledge beyond Basic Chemical Engineering? We've handpicked a range of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!