Which of the following liquids has the highest surface tension at room temperatu

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Question: Which of the following liquids has the highest surface tension at room temperature?

Options:

Correct Answer: Mercury

Solution:

Mercury has a very high surface tension due to strong cohesive forces between its molecules, higher than that of water, ethanol, and benzene.

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

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

Correct Answer: Mercury

Step 1: Understand what surface tension is. Surface tension is the force that makes the surface of a liquid behave like a stretched elastic sheet.
Step 2: Know that different liquids have different surface tensions. This is due to the strength of the forces between their molecules.
Step 3: Identify the liquids in the question: Mercury, water, ethanol, and benzene.
Step 4: Learn that mercury has very strong cohesive forces between its molecules, which means the molecules stick together very well.
Step 5: Compare the surface tensions: Mercury has a higher surface tension than water, ethanol, and benzene because of these strong forces.
Step 6: Conclude that among the given liquids, mercury has the highest surface tension at room temperature.

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