Post Utme Chemistry Questions
Question 271:
In the reversible reaction:<br/>2NO₂(g) ⇌ N₂O₄(g)<br/>Increasing pressure favours formation of:
- A Oxygen gaseous particles
- B Nitrogen dioxide gas
- C Dinitrogen tetroxide gas
- D Catalyst decomposition products
Question 272:
Sodium chloride conducts electricity when molten because it contains:
- A Free moving atoms
- B Stable covalent bonds
- C Free moving ions
- D Neutral molecules only
Question 273:
The oxidation number of sulfur in Hâ‚‚SOâ‚„ is:
- A Positive six value
- B Positive two value
- C Positive four value
- D Negative two value
Question 274:
In the equilibrium reaction:<br/>CO(g) + 2H₂(g) ⇌ CH₃OH(g)<br/>Removing methanol from the system causes:
- A More carbon monoxide formation
- B Pressure to become constant
- C Equilibrium to stop completely
- D More methanol formation
Question 275:
A substance with pH value 13 is:
- A Slight acidic solution
- B Weak acidic solution
- C Strong alkaline solution
- D Neutral aqueous solution