Question
Which one of the following is a super-cooled
liquid? Directions : Each of the following five items consists of a word in capital letters, followed by four words or groups of words. Select the word or group of words that is most similar in meaning to the word in capital letters.Solution
Supercooling is the process of chilling a liquid below its freezing point, without it becoming solid. • A super-cooled liquid is a liquid below its freezing point that has not crystalized to freeze. • Glass is an example of supercooled liquid. Hence option C is correct. • Teflon is not a product on its own, but a brand name of a product. It refers to a chemical coating known as polytetrafluoroethylene (PTFE). • Mercury is the only liquid metal at room temperature.
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