Which of the following is not matched correctly with its use?

piezoelectric material - Quartz

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Ion-exchangers - Graphite

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Filtration plants - silica

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Electrical insulators - Silicones

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Solution

The correct option is B Ion-exchangers - Graphite
Ion exchange is an exchange of ions between two electrolytes or between an electrolyte solution and a complex. Zeolites are used as ion-exchangers in softening of hard water.

Hence, option $B$ is not correctly matched.

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Which of the following objects are correctly matched with its material?

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