Which chemical property is most relevant when considering the mixing of drinkable and contaminated water?

• A. Melting point of water
• B. Density of water
• C. Reactivity with oxygen
• D. Solubility of contaminants

Answer: (D)

Verified step by step guidance

1. Identify the key concern when mixing drinkable and contaminated water, which is how contaminants behave in water.
2. Understand that melting point and density of water are physical properties that do not directly affect how contaminants dissolve or interact in water.
3. Recognize that reactivity with oxygen relates to chemical reactions involving oxygen, which is not the primary factor in mixing water and contaminants.
4. Focus on solubility, which is the ability of contaminants to dissolve in water, as this determines how contaminants spread and affect water quality.
5. Conclude that the most relevant chemical property in this context is the solubility of contaminants, since it directly impacts the safety and purity of the mixed water.