Unit#5: Reaction Kinetics + Unit#6: Salts

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1. Which of the following increases diffusion rate?

A Lower temperature

B Higher temperature

C Higher mass

D Lower concentration

2. Reaction kinetics mainly deals with:

A Amount of reactants

B Speed of reactions

C Color of products

D Mass of products

3. Enzymes are best described as:

A Inorganic catalysts

B Synthetic chemicals

C Biological catalysts

D Reactants

4. Which salt is formed when hydrochloric acid reacts with sodium hydroxide?

A Sodium sulfate

B Sodium nitrate

C Sodium chloride

D Sodium carbonate

5. Which salt is used as preservative in food?

A Sodium chloride

B Copper sulfate

C Silver nitrate

D Potassium permanganate

6. What is meant by the rate of a chemical reaction?

A Amount of catalyst used

B Time taken for completion

C Change in concentration per unit time

D Temperature of reaction

7. Which salt is commonly insoluble?

A Nitrates

B Sodium salts

C Potassium salts

D Silver salts

8. Which factor is most important for enzyme activity?

A Color

B pH

C Volume

D Pressure

9. Which salt is used to control algae in ponds?

A Sodium chloride

B Copper sulfate

C Ammonium nitrate

D Sodium carbonate

10. Which salt is prepared by neutralization reaction?

A Sodium chloride

B Calcium carbonate

C Sodium sulfate

D All of these

Unit#5: Reaction Kinetics + Unit#6: Salts

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