23. Which of the following metal exists in liquid form and is also used in thermometer? (i) Sodium (ii) Mercury (iii) Silver (iv) Potassium
A. (i) and (iii) B. (ii) and (iii) C. Only (1) D. Only (iii)
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Answer:
Mercury
Explanation:
As Mercury has very low melting point and it doesn't stick on the walls of the container
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Option B = Mercury because Mercury is in liquid forms it measure by thermometer
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