Post Utme Chemistry Questions
Question 621:
The equation 2Al + 3CuSOâ‚„ → Alâ‚‚(SOâ‚„)₃ + 3Cu shows that aluminium is:
- A Less reactive than copper
- B Equal in reactivity to copper
- C Unable to form compounds
- D More reactive than copper
Question 622:
The equation Mg + 2HCl → MgClâ‚‚ + Hâ‚‚ shows magnesium forming:
- A Magnesium sulphate
- B Magnesium chloride
- C Magnesium oxide
- D Magnesium carbonate
Question 623:
The main reason for using coefficients in equations is to:
- A Change the products formed
- B Balance atom numbers
- C Reduce compound masses
- D Increase reaction speed
Question 624:
In a chemical equation, substances written after the arrow are:
- A Solvents
- B Products
- C Catalysts
- D Reactants
Question 625:
The product formed when hydrogen burns in oxygen is:
- A Ammonia
- B Hydrogen peroxide
- C Water
- D Sodium hydroxide