JAMB Biology 2015 Objective — Question 7

Question 7 of 50 from the Joint Admissions and Matriculation Board (JAMB) Biology 2015 Objective paper, with the correct answer and a full explanation.

The presence of impurities in a solid will make the melting point to

A. decreaseCorrect
B. increase
C. remain unchanged
D. be zero

Explanation

Impurities generally cause the melting point of a solid to decrease (melting point depression), while they raise the boiling point of a liquid.

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