Which of the following radioactive substance is mixed with phosphor to make luminescent paint?

Samarium

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Tritium

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Iodine

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Strontium

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Solution

The correct option is B Tritium
The radioactive substances have lots of industrial application. Substances like radium, promethium and tritium along with phosphor are used to make certain objects visible in dark. These are used to make luminescent paint, hands of clock, etc.

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