TestUstad

A catalyst is more effective when it is in the finely divided state because:

Correct answer: B. This increases the surface area of the catalyst

  • A. The valence electrons are easily available
  • B. This increases the surface area of the catalyst
  • C. It attains equilibrium quickly
  • D. All of the above

Explanation

Option b is correct. A catalyst is more effective when it is in the finely divided state because it increases the surface area of the catalyst. This allows more reactant molecules to come into contact with the catalyst, increasing the likelihood of successful collisions and hence speeding up the reaction.

Written and checked by , M.Phil ChemistryLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Chemical Equilibrium

Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.

Practise Chemical Equilibrium

625 free Chemical Equilibrium MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Chemical Equilibrium testAll Chemical Equilibrium MCQs

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Chemistry questions like this

Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Lecturer Chemistry Test Chemistry80 MCQsSubject Specialist Chemistry Test Chemistry80 MCQsDUHS Chemistry45 MCQsETEA MDCAT Chemistry45 MCQsKMU Chemistry45 MCQsMDCAT Chemistry45 MCQsNUMS Chemistry40 MCQsECAT Chemistry30 MCQsETEA Engineering Admission Test Chemistry30 MCQsGIKI Chemistry30 MCQsNED Chemistry30 MCQsNET Chemistry30 MCQsPIEAS Chemistry30 MCQsBSN Entry Test Chemistry25 MCQs

More Chemical Equilibrium questions

Which of the following is correct?

For a certain chemical reaction, the slope of the plot was determined and plotted against the concentration (a-x)2 and a straight line was obtained. It indicates that the reaction is of:

Consider the following general reaction: IA+IB → products. Rate of this reaction is expressed as: Rate = K[A]1[B]1 The correct order of reaction and molecularity is:

Change in concentration of a reactant is plotted against time and the slope dx/dt determined. The values of dx/dt are plotted against (a-x)2 and a straight line is obtained. It may be concluded that the reaction is:

Choose the one which is not an assumption of collision theory of reaction rate:

In which of the following reactions decrease or increase in pressure have no effect on the change of direction of the reaction?