Post Utme Chemistry Questions
Question 296:
Rusting of iron occurs mainly in the presence of:
- A Nitrogen and argon
- B Water and oxygen
- C Chlorine and sulfur
- D Hydrogen and helium
Question 297:
In the equilibrium reaction:<br/>2H₂S(g) + 3O₂(g) ⇌ 2SO₂(g) + 2H₂O(g)<br/>Increasing oxygen concentration favours:
- A Water decomposition process
- B Hydrogen sulfide formation
- C Sulfur dioxide formation
- D Catalyst decomposition process
Question 298:
The empirical formula represents the:
- A Complete atomic structure
- B Simplest atom ratio
- C Physical compound state
- D Exact molecular arrangement
Question 299:
A catalyst increases reaction speed mainly by:
- A Increasing molecular mass
- B Raising boiling temperature
- C Removing gaseous products
- D Lowering activation energy
Question 300:
In the equilibrium reaction:<br/>2NO(g) + O₂(g) ⇌ 2NO₂(g)<br/>Decreasing pressure favours formation of:
- A Nitric oxide reactants
- B Oxygen removal products
- C Catalyst decomposition products
- D Nitrogen dioxide products