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Allotropes of Phosphorus

The rough, re...

Question

The rough, reddish-brown strip on a safety matchbox is used for lighting a match by striking against it. It is made of powdered glass mixed with:

A

Mercury

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B

White phosphorous

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C

Red lead

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D

Potash

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Solution

The correct option is B White phosphorous
The reddish-brown strip on a safety match box is made of powdered glass and red phosphorus, not white phosphorus because white phosphorus is highly toxic.

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Allotropes of Phosphorus

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