Post Utme Chemistry Questions
Question 306:
In the equilibrium reaction:<br/>CaCO₃(s) ⇌ CaO(s) + CO₂(g)<br/>Increasing pressure favours formation of:
- A Carbon dioxide product
- B Calcium carbonate solid
- C Catalyst decomposition product
- D Calcium oxide product
Question 307:
The gas evolved when metals react with dilute acids is:
- A Hydrogen gaseous element
- B Nitrogen atmospheric gas
- C Oxygen gaseous element
- D Chlorine poisonous gas
Question 308:
During electrolysis of molten sodium chloride, sodium forms at the:
- A Anode electrode region
- B External battery region
- C Cathode electrode region
- D Electrolyte solution region
Question 309:
In the equilibrium reaction:<br/>H₂(g) + CO₂(g) ⇌ H₂O(g) + CO(g)<br/>Removing carbon monoxide causes:
- A Catalyst decomposition products
- B More carbon monoxide formation
- C More hydrogen gas formation
- D Equilibrium to stop fully
Question 310:
Carbon dioxide turns limewater milky because calcium carbonate:
- A Conducts electricity strongly
- B Burns with blue flame
- C Produces blue solution
- D Forms white precipitate