Chemistry Practice MCQ Page 49

Multiple Choice questions for Chemistry in the sets of 10 each on one page with questions and answers. All sets are useful in the preparation of subject tests for employment or admission.

Question: 3370 The activated complex dissociates into

reactants
products
catalyst
intermediates

Question: 3371 Only an effective molecular collision can result in the formation of a

reactant
product
activated complex
intermediate

Question: 3372 Two molecules with sufficient energy collide to form

reactant
product
activated complex
intermediate

Question: 3373 The minimum amount of energy that a reaction system requires to attain transition state is called

internal energy
deactivation energy
deactivation
reaction energy

Question: 3374 The value of the activation energy is much greater than average kinetic energy of the

atoms
molecules
reactants
products

Question: 3375 Once a reaction starts, heat released by activated complex provides heat to the remaining molecules for

reaction
activated complex
product
reactant

Question: 3376 For a chemical reaction the number of molecules that become activated per unit time is indicate by

velocity of molecules
velocity of reaction
kinetic energy
potential energy

Question: 3377 When molecules attain energy more than the average kinetic energy, they form

product
reactant
activated complex
biproduct

Question: 3378 The rate of reaction decrease if the temperature of the reaction system

is increased
kept constant
is decreased
is kept changing

Question: 3380 Activation energy has a symbol of

E₀
E_a
E
ΔE

Question: 3381 Energy of activation is usually expressed in

joules
calories
ergs
newtons

Question: 3382 When the products are in lower energy state than the reactants, the reaction is

stable
endothermic
at equilibrium
exothermic

Answers to the questions of Chemistry on this page

Following list gives the correct choice for the answer of the Chemistry mcqs.
3370 . B 3371 . B 3372 . C 3373 . B 3374 . B 3375 . A 3376 . A 3377 . C 3378 . C 3380 . B 3381 . A 3382 . D

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Chemistry Practice MCQ Page 49

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