Which of the following liquids has the greatest surface tension at ordinary room temperature?
Options

Question

Which of the following liquids has the greatest surface tension at ordinary room temperature?

G1 Physics · Accepted Answer

Step 1: Surface tension increases with the strength of cohesive intermolecular forces in a liquid. Step 2: Water molecules form a strong three-dimensional hydrogen-bonding network. Step 3: At room temperature, water has surface tension approximately 0.072 N/m, exceeding benzene, methanol and ethanol. Final answer: H₂O (Option A).