Which of the following is not a use of graphite ?

Lubricant

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Electrodes

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Black paints

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High precision thermometers

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Solution

The correct option is D High precision thermometers
Graphite is a good conductor of electricity but cannot conduct heat hence it is used as electrodes in numerous cells but cannot be used in high precision thermometers.

Whereas the diamond can conduct heat, therefore, it can be used in high precision thermometers.

So, the correct option is $D$

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