Choose the incorrect statement regarding Beryllium :

It is used in the manufacture of alloys.

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Cu-Be alloys are used in the preparation of high strength springs.

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Metallic beryllium is used for making windows of X-ray tubes.

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B e C O_{3}

is an ingredient of toothpaste.

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Solution

The correct option is D $B e C O_{3}$ is an ingredient of toothpaste.
Uses of Beryllium:
It is used in the manufacture of alloys.
Cu-Be alloys are used in the preparation of high strength springs.
Metallic beryllium is used for making windows of X-ray tubes.
$M g C O_{3}$ is used as an ingredient in toothpaste.
So (d) is incorrect.

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