Post Utme Chemistry Questions
Question 596:
The reaction 2CO + Oâ‚‚ → 2COâ‚‚ shows carbon monoxide:
- A Losing oxygen
- B Gaining oxygen
- C Changing into acid
- D Becoming hydrogen
Question 597:
A chemical equation becomes balanced when:
- A Products become solids
- B Temperature becomes constant
- C Gases disappear completely
- D Atom numbers become equal
Question 598:
A reaction in which heat is released into the surroundings is called:
- A Decomposition reaction
- B Endothermic reaction
- C Reversible reaction
- D Exothermic reaction
Question 599:
The equation 2FeCl₃ + 3Mg → 3MgClâ‚‚ + 2Fe shows magnesium:
- A Decomposing chlorine
- B Reducing pressure
- C Forming precipitate
- D Displacing iron
Question 600:
The equation 2K + 2Hâ‚‚O → 2KOH + Hâ‚‚ shows potassium reacting with:
- A Oxygen
- B Chlorine
- C Water
- D Sulphuric acid