201. Energy of activation is usually expressed
in?
A. Joules
B. Calories
C. Ergs
D. Newtons
202. When the products are in lower energy
state than the reactants, the reaction is?
A. Stable
B. Endothermic
C. At equilibrium
D. Exothermic
203. Two molecules with sufficient energy
collide to form?
A. Activated complex
B. Reactant
C. Product
D. Intermediate
204. The minimum amount of energy that a
reaction system requires to attain transition state is called?
A. Internal energy
B. Deactivation
C. Reaction
energy
D. Deactivation energy
205. The value of the activation energy is
much greater than average kinetic energy of the?
A. Atoms
B. Molecules
C. Reactants
D. Products
206. Once a reaction starts, heat released by
activated complex provides heat to the remaining molecules for?
A. Reaction
B. Activated
complex
C. Product
D. Reactant
207. For a chemical reaction the number of
molecules that become activated per unit time is indicate by?
A. Velocity of molecules
B. Velocity of
reaction
C. Kinetic energy
D. Potential
energy
208. When molecules attain energy more than
the average kinetic energy, they form?
A. Product
B. Reactant
C. Activated complex
D. Biproduct
209. The activated complex dissociates into?
A. Reactants
B. Products
C. Catalyst
D. Intermediates
210. Only an effective molecular collision can
result in the formation of a?
A. Product
B. Intermediate
C. Reactant
D. Activated
complex
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