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Why is phosphorus kept under water ?

  • A.To make it wet
  • B.To make it durable
  • C.Water forms a protective coating on it
  • D.To save it from catching fire when exposed to dry air

Answer: D

Phosphorus is kept under water to stop it catching fire in air.

White phosphorus ignites spontaneously at about 30 °C, close to room temperature in a warm climate. It is insoluble in water and denser than it, so a covering layer keeps oxygen away without dissolving or reacting with the element.

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