Difficulty: Easy
Correct Answer: It expands uniformly, does not wet glass, and has a high boiling point giving a wide measurable range
Explanation:
Reasons
Mercury shows near-uniform thermal expansion, does not wet glass (clear meniscus/readings), and boils at ~357°C enabling a wide upper range. It is also opaque and shiny for easy visibility.
Note
Although mercury freezes at about −39°C (higher than alcohols), its other properties make it favorable for many thermometers.
Final Answer
It expands uniformly, does not wet glass, and has a high boiling point giving a wide measurable range
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