Post Utme Chemistry Questions
Question 771:
Which factor directly increases collision frequency in a solution:
- A Lowering concentration level
- B Reducing particle number
- C Increasing concentration level
- D Removing reacting particles
Question 772:
Which hydrocarbon contains the highest proportion of hydrogen?
- A Ethane
- B Ethene
- C Ethyne
- D Benzene
Question 773:
A higher concentration increases reaction rate because it causes:
- A More successful collisions
- B Reduced particle movement
- C Lower activation energy
- D Fewer molecular collisions
Question 774:
Which condition would produce the fastest reaction:
- A Low concentration mixture
- B Concentrated reactant solution
- C Weak particle attraction
- D Dilute acid solution
Question 775:
Collision theory explains reaction rates mainly in terms of:
- A Particle collisions occurring
- B Pressure differences formed
- C Colour changes observed
- D Product shapes produced