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Which of the following is very reactive and kept in kerosene?
1. Sodium
2. Iodine
3. Bromine
4. Calcium

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Correct Answer - Option 1 : Sodium

The Correct Answer is Sodium.

 

  • Sodium and Potassium are very reactive metals.
  • They are kept in kerosene oil to prevent them from coming in contact with oxygen and moisture.
  • On coming in contact with oxygen and moisture they react to form their hydroxides.
  • This is an exothermic reaction and a lot of heat is generated so both the metals are kept in kerosene oil.

 

  • Iodine is a non-metallic, dark-grey/purple-black, lustrous, solid element. 
  • Bromine is a chemical element with the symbol Br and atomic number 35.
  • It is a red-brown liquid at room temperature.
  • Calcium is a silvery-white, soft metal that tarnishes rapidly in air and reacts with water.
  • Calcium metal is used as a reducing agent in preparing other metals such as thorium and uranium.

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