Displacement Reactions Quiz-grade 8

1. Which of the following statements best describes a displacement reaction?

• A. A reaction where a more reactive metal displaces a less reactive metal from its compound.

• B. A reaction where two compounds exchange their ions.

• C. A reaction where an acid and a base react to form salt and water.

• D. A reaction where a substance burns in the presence of oxygen.

2. In a displacement reaction, which of the following metals can displace zinc from zinc sulfate solution?

• A. Copper

• B. Silver

• C. Iron

• D. Magnesium

3. Which of the following will NOT result in a displacement reaction?

• A. Magnesium + Copper sulfate

• B. Zinc + Copper sulfate

• C. Copper + Zinc sulfate

• D. Iron + Copper sulfate

4. Which metal is the most reactive based on the reactivity series?

• A. Gold

• B. Iron

• C. Potassium

• D. Copper

5. What happens when an iron nail is placed in a copper sulfate solution?

• A. The nail dissolves completely.

• B. A chemical reaction occurs, and the solution turns blue.

• C. The iron displaces copper from the solution, forming iron sulfate.

• D. Nothing happens, as iron is less reactive than copper.

6. When zinc is added to hydrochloric acid, what gas is produced?

• A. Oxygen

• B. Carbon dioxide

• C. Hydrogen

• D. Nitrogen

7. Which of the following metals will displace hydrogen from an acid solution?

• A. Copper

• B. Gold

• C. Silver

• D. Zinc

8. Which pair of elements can undergo a displacement reaction?

• A. Copper and silver nitrate

• B. Zinc and sodium chloride

• C. Sodium and magnesium sulfate

• D. Iron and sodium sulfate

9. Which of the following is a correct reactivity series order from most to least reactive?

• A. Potassium > Sodium > Calcium > Magnesium

• B. Iron > Copper > Silver > Gold

• C. Zinc > Copper > Silver > Magnesium

• D. Sodium > Potassium > Magnesium > Calcium

10. Which metal will NOT react with dilute hydrochloric acid?

• A. Zinc

• B. Magnesium

• C. Iron

• D. Copper