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Question

Potassium is kept in        


  1. Alcohol

  2. Water

  3. Kerosene

  4. Liquid ammonia


Solution

The correct option is C

Kerosene


Alkali metals are highly reactive metals. They react with

Alcohol - 2C2H5OH + 2K  2C2H5OK + H2

Water - 2K + 2H2O  2KOH + H2

Ammonia - K + (x + y)NH3  [K(NH3)x]+ + [e(NH3)y]

                                                           Ammoniated cation   Ammoniated electron

But they do not react with kerosene. 

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