Post Utme Chemistry Questions
Question 671:
The reaction 2Al + Feâ‚‚O₃ → Alâ‚‚O₃ + 2Fe is called:
- A Neutralization process
- B Thermite reaction
- C Electrolysis process
- D Precipitation reaction
Question 672:
Which gas law relates volume and number of molecules?
- A Charles’ law relationship
- B Dalton’s law relationship
- C Avogadro’s law relationship
- D Boyle’s law relationship
Question 673:
The equation CuSOâ‚„ + Fe → FeSOâ‚„ + Cu causes the solution colour to:
- A Form red acidic liquid
- B Change from blue to green
- C Become colourless immediately
- D Change from green to blue
Question 674:
The equation NHâ‚„Cl + NaOH → NaCl + NH₃ + Hâ‚‚O produces:
- A Oxygen gas
- B Ammonia gas
- C Carbon dioxide
- D Chlorine gas
Question 675:
The reaction 2Mg + COâ‚‚ → 2MgO + C shows magnesium:
- A Removing oxygen from carbon dioxide
- B Forming acidic compounds
- C Changing into liquid metal
- D Decomposing into atoms