Post Utme Chemistry Questions
Question 691:
In the equation 2NH₃ + Hâ‚‚SOâ‚„ → (NHâ‚„)â‚‚SOâ‚„, the ratio of ammonia to sulphuric acid is:
- A 2 : 1 ratio
- B 1 : 2 ratio
- C 1 : 1 ratio
- D 3 : 2 ratio
Question 692:
The reaction 2Hâ‚‚Oâ‚‚ → 2Hâ‚‚O + Oâ‚‚ is an example of:
- A Displacement reaction
- B Decomposition reaction
- C Neutralization reaction
- D Combustion reaction
Question 693:
The gas produced when acids react with carbonates turns limewater:
- A Milky
- B Green
- C Blue
- D Colourless
Question 694:
The number of moles in 18 g of ammonia, NH₃, is closest to:
- A 2 moles approximately
- B 1 mole approximately
- C 4 moles approximately
- D 3 moles approximately
Question 695:
What mass of carbon monoxide, CO, equals 2 moles?
- A 28 g exactly
- B 44 g exactly
- C 72 g exactly
- D 56 g exactly