Match the entries of column I with appro

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Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Chemical Kinetics

Question:

Match the entries of column I with appropriate entries of column II and choose the correct option out of the four options given.

Column I	Column II
(i) Catalyst alters the rate of reaction	(a) cannot be fraction or zero
(ii) Molecularity	(b) by lowering the activation energy
(iii) Energetically favourable reactions are sometimes slow	(c) refers to the fraction of molecules with energy equal to or greater than activation energy
(iv) e^-E_a/RT	(d) proper orientation is not there always

Options:

(i)-(b), (ii)-(a), (iii)-(d), (iv)-(c)

(i)-(a), (ii)-(b), (iii)-(c), (iv)-(d)

(i)-(d), (ii)-(c), (iii)-(b), (iv)-(a)

(i)-(b), (ii)-(d), (iii)-(a), (iv)-(c)

Correct Answer:

(i)-(b), (ii)-(a), (iii)-(d), (iv)-(c)

Explanation:

(i) Catalyst alters the rate of reaction by lowering the activation energy. It increases the rate of reaction.

(ii) Molecularity of a reaction cannot be fraction or zero. It can have value 1, 2 and 3.

(iii) Energetically favourable reactions are sometimes slow because there is not proper orientation always during collision of molecules.

(iv) e^-E_a/RT : Arrhenius equation refers to the fraction of molecules with energy equal to or greater than activation energy.