Post Utme Chemistry Questions
Question 276:
In the equilibrium system:<br/>CaCO₃(s) ⇌ CaO(s) + CO₂(g)<br/>Removing carbon dioxide gas will:
- A Stop equilibrium formation
- B Prevent calcium oxide production
- C Increase decomposition rate
- D Reduce calcium carbonate completely
Question 277:
Ethene differs from ethane because ethene:
- A Forms ionic compounds
- B Contains double bond
- C Possesses triple bond
- D Exists as cyclic molecule
Question 278:
During electrolysis, oxidation occurs at the:
- A Cathode electrode region
- B Anode electrode region
- C Electrolyte solution region
- D Battery connection region
Question 279:
In the equilibrium reaction:<br/>N₂(g) + O₂(g) ⇌ 2NO(g)<br/>Increasing temperature favours:
- A Nitrogen gas formation
- B Nitric oxide formation
- C Oxygen gas removal
- D Catalyst decomposition products
Question 280:
The process used for separating petrol from crude oil is:
- A Chromatography separation method
- B Sedimentation separation method
- C Filtration purification process
- D Fractional distillation process