Unit#5: Reaction Kinetics

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1. Which of the following is an example of a catalyst?

A Iron in Haber process

B Water

C Oxygen

D Carbon dioxide

2. Which graph best represents a fast reaction?

A Gentle slope

B Horizontal line

C Steep slope

D Zigzag line

3. Fast reactions usually have:

A High activation energy

B Low activation energy

C No collisions

D Low temperature

4. Which of the following lowers activation energy?

A Inhibitor

B Catalyst

C Reactant

D Product

5. Diffusion is the movement of particles from:

A Low concentration to high concentration

B High concentration to low concentration

C Solid to liquid

D Liquid to solid

6. Increasing surface area of reactants will:

A Decrease reaction rate

B Not affect reaction rate

C Increase reaction rate

D Stop the reaction

7. Collision theory applies mainly to reactions in:

A Solid state

B Gaseous state

C Plasma state

D Vacuum

8. Collision theory explains reaction rate in terms of:

A Color change

B Effective collisions

C Mass of reactants

D Volume change

9. Which substance speeds up a reaction without being consumed?

A Reactant

B Product

C Catalyst

D Solvent

10. Which factor does NOT affect the rate of reaction?

A Temperature

B Pressure

C Color of reactants

D Concentration

Unit#5: Reaction Kinetics

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