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    Question

    Which of the following is used as a substitute for

    mercury in thermometers?
    A Arsenic Correct Answer Incorrect Answer
    B Galinstan Correct Answer Incorrect Answer
    C Selenium Correct Answer Incorrect Answer
    D Bromine Correct Answer Incorrect Answer

    Solution

    Galinstan is a non-toxic liquid alloy that replaces mercury in thermometers. It is made from gallium, indium, and tin. It has a lower density and higher reflectivity compared to mercury, making it suitable for use in thermometers without the environmental hazards associated with mercury.

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