WAEC Chemistry 2018 Objective — Question 30
Question 30 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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One of the criteria for confirming the purity of benzene is to determine its
- A. heat capacity
- B. boiling pointCorrect
- C. P₂O₅
- D. colour
Explanation
The purity of a liquid such as benzene can be confirmed by its boiling point — presence of impurity raises the boiling point above the pure substance's known value.
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