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Question

A metal, which melts on the palm:

A
potassium
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B
sodium
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C
gallium
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D
zinc
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Solution

The correct option is C gallium

1) Gallium is a metal with very low melting point around at 85.6°F(29.8°C).

2) Thus Gallium melts on the palm.

3) where as its boiling point is quite high around at 4044°F(2229°C).

4) This quality makes gallium ideal for recording temperatures that would destroy a thermometer.


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