1.

An alloy of which pair of metals is liquid at ordinary temperature and is used in special thermometers used for finding temperatures above the boinding point of mercury.

Answer»

`Na and Hg`
`K and Hg`
`Na and K`
NONE of these

Solution :An ALLOY of Na and K is liquid at ordinary temperature and is used in special THERMOMETERS used for finding temperature above boiling POINT of mercury.


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