Quarter 2

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1. Which salt is used in electroplating?

A Copper sulfate

B Sodium chloride

C Calcium carbonate

D Potassium nitrate

2. Which of the following lowers activation energy?

A Inhibitor

B Catalyst

C Reactant

D Product

3. Which metal can displace copper from copper sulphate solution?

A Silver

B Gold

C Iron

D Mercury

4. Which salt is used in making plaster of Paris?

A Calcium sulfate

B Calcium carbonate

C Sodium sulfate

D Magnesium sulfate

5. Which of the following increases diffusion rate?

A Lower temperature

B Higher temperature

C Higher mass

D Lower concentration

6. Which unit is commonly used for reaction rate?

A mol

B mol dm⁻³ s⁻¹

C dm³

D second

7. Which catalyst is used in the Contact process?

A Iron

B Nickel

C Platinum or vanadium(V) oxide

D Copper

8. Which salt turns red litmus blue?

A Acidic salt

B Neutral salt

C Basic salt

D Normal salt

9. Which salt contains water of crystallization?

A Anhydrous salt

B Hydrated salt

C Dry salt

D Neutral salt

10. What is the general formula of alkenes?

A CnH2n+2

B CnH2n

C CnH2n-2

D CnHn

Quarter 2

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