Post Utme Chemistry Questions
Question 636:
Enzymes are biologically important because enzymes:
- A Destroy body proteins
- B Prevent cellular respiration
- C Speed up biochemical reactions
- D Produce atmospheric gases
Question 637:
The formula used to calculate moles from particles is:
- A N = N × L
- B N = m × M
- C N = P/V
- D N = N/L
Question 638:
Diesel oil differs from petrol mainly because diesel oil:
- A Contains fewer hydrocarbons
- B Has higher boiling range
- C Burns with invisible flames
- D Forms gaseous products only
Question 639:
The empirical formula of P₂O₅ is:
- A PO empirical formula
- B PO₂ empirical formula
- C P₄O₁₀ molecular formula
- D P₂O₅ empirical formula
Question 640:
The empirical formula of C₁₂H₂₄ is:
- A CH₂ empirical formula
- B C₆H₁₂ molecular formula
- C CH empirical formula
- D CH₄ empirical formula